"Good support and difficult time unlocking a phone"
I processed two unlock codes for two Samsung I897 Captivate.
For the 1st phone the unlock code worked right away. This experience was outstanding and I'm happy with this outcome.
2nd phone. I didn't work with the unlock code. I submitted several videos. Opted to buy the defreeze code. I got a refund for the first unlock code transaction. The defreeze code ever worked. I sent videos and the support started to send late replies. Left out with no option. I did have to send the phone to Samsung for software reflash. During that process, Samsung repaired some components on the phone and send it back to me. I had to pay Samsung about 70 USD to get it back
When I received the phone the unlock code worked right away.
I think that the fair thing to do is to pay just for the unlock code. I've ever used a defreeze code for my phone to get unlocked.