G2A

Most steam i buy here dont work iff you ckntact the seller you get a answer from this is for the uk where my girlfriend lives

Sketchy website, and poor customer support. This is in no way a website like CDKeys or instant gaming.
I purchased Phasmophobia thinking it was a digital key and it turned out to be a Steam account. When contacted the seller he refused to give a refund (I didn't even use the account), when raised a ticked with G2A customer "Support", they refused to help as well.
I had to use the account but when Steam found out that the account was created by a different person (teh dodgy seller), they deleted the account and the game as well (thank god I didn't buy more games on that account) and they asked me to get a refund from the seller, who of course didn't refund, neither did the useless customer support.
Steam Customer Support advised that buying second hand accounts is against Steam agreement and if Steam finds out, they will delete the account and neither the seller nor the useless G2A customer services will help you. I can't believe G2A allow illegal practices on the website and when you flag that up to them, they just ignore you.
** DO NOT USE THIS SCUM WEBSITE AND DO NOT BUY STEAM ACCOUNTS UNLESS YOU CREATE THEM AND HAVE A PROOF OF PURCHASE OF EVERY SINGLE GAME ON THE ACCOUNT LIBRARY, OTHERWISE, STEAM WILL DELETE THE ACCOUNT AND ALL THE GAMES EVEN IF YOU'VE PAID FOR ALL OF THEM****

Key in use and no accountability for the seller. Waste of time and money. Do yourself a favor and avoid this site.

I have all supporting evidences to what I have written below.

This company is the worst end users fraudulent ever. I bought two Adobe products from a seller on their page, and the keys provided for the two products both were fake and did not work, and I could not even register them on my Adobe account. I have had many communications with seller, and he kept sharing fake product keys and I reached no were. When I reported to G2A for the "money back guarantee", I found out that G2A is a bigger fraud company, and probably a fraud partner with the fake seller. They started by asking for a purchase prove, even though I have purchased it from them, I submitted that, then they asked to show them screenshots showing that the product key is not working, I did, then, they said I must contact adobe support and get them some additional info, which I did. Simply every reply they come up with a different request, and multiple repeated requests, and all provided, and sometime a new fake key that also does not work, then back to screenshot inquiries, and finally they came up with the most ridicules request, asking my to report the seller (who is online and God knows in which country), to my local police authorities and send them a police report and the police must confirm that this is a fraud, etc.

Basically, I have no spent months without getting my money back, and clearly they have a systematic fraud process in place to make buyers give up and stop asking for a refund after they are tired of the months of back and fourth endless cycles.

Even some of the "good review", those are fake reviews for people working for them, this is what I found after I managed to reach to a person who used to work from them and he has quit after he found out about their fraud business.

Hello. Think before you work with the system G2A as seller. After 2500 Sales (1300 positive comments about my product) my account was blocked. For the fact that I have added one not corrected the product (loaded keys, which unfortunately turned out to be not working), after 2 sales (one I had to make a refund) my account was blocked. Yes, 2 sales are not correct keys, even though 1,300 of my positive feedback. After that, I do not give to withdraw ~600 euros from my account (the total amount of the turnover amounted to more than 1000 euro). I wrote about 10 letters in support of those - I can not unlock your account, do not say the reason - simply refused to unlock. My earnings are not allowed to withdraw from the system. I give their data - up to ID, many screenshots, but nothing happens.

I think just found a reason not to pay me my 600 euros. Сommunicate with me no one wants to say that the decision is not changed. If you are interested - I can provide additional screenshots from my account.

More screenshots:

http://snap.ashampoo.com/uploads/2015-06-02/pS2Lr57x.png
http://snap.ashampoo.com/uploads/2015-06-02/JMvQ3cDY.png
http://snap.ashampoo.com/uploads/2015-06-02/AV6jgUuo.png

After my account is blocked and i can't withdraw money, g2a still selling my keys:

http://snap.ashampoo.com/uploads/2015-06-02/RnL1pj6S.png

And i can't stop or delete my keys from the system.

They have zero customer support and even promote the scammers. They have no care for you and only for your money.

Really folks, dont risk it!

I purchased a MS365 key (Office365) which was promptly delivered, but it never worked. Once entered into Microsoft's admin portal, none of separate products were activated, and no expiry date was shown. When I first contacted the vendor (with a screenshot of the error), they simply claimed "We have delivered everything you ordered" and suggested I contact Microsoft Support. They also claimed they were an official Microsoft partner, but no details could be found on the Partner Portal, and they refused to supply their registered partner address or partner ID number (highly suspicious, no?).

I wasted more than 21 hours (spread over several days) in online chat and remote control sessions with Microsoft Support before we collectively concluded the supplied key didn't work. [As a separate issue, you really would think Microsoft would be able to tell immediately whether a key was valid - but apparently not!]

I let the vendor know all this, and they just stayed defensive, asked for screenshots of support conversations (which of course I didn't have), and refused to assist me if I could not provide them with material I didn't have.

Judging from other comments and reviews from other buyers, this seems pretty typical behaviour.

Eventually, I just bought a licence from another company (Blue Nandu) and asked my credit card company to get a refund for me (as I held them jointly liable for the supply of defective goods). A couple of days after getting my credit card refund, G2A sent me a mail saying

"Your G2A account has been blocked due to anomalous activity that our system detected. We are sorry for this inconvenience, but this decision will not be changed. Your account will remain blocked."

I assume they were annoyed because the credit card company will have taken back the money.

Funnily enough, I now seem to be receiving extraordinary amounts of spam to my e-mail account. I'm sure it's just a coincidence.

Selles you used steam keys and wont refund, even thought sent them proof they wont refund at all, stay away