I've used this service twice - the first time they were able to unlock my phone only after charging me $30 more than the original quoted price, it took weeks to unlock. The next time I decided to try them again, thinking maybe it would be faster this time. They charged me an initial $28, and then emailed me a few days later saying the unlock was unsuccessful and they needed to charge me $70 more to unlock it, for a total of ONE HUNDRED dollars for one unlock. I emailed them back asking why the first time they unlocked a phone for me with their "premium service" it costed a total of $60, and why this time they were asking for $100 for the same service. This second phone was the same model as the first, on the same network. There is no reason why suddenly they should be asking for $40 more. This site is running complete scam and fraud practices. I've emailed them twice since then and nobody has responded to me.
Not only this, but the company actually offers you a cash bribe to leave them a good review. If that doesn't scream shady practices I don't know what does. I'm attaching a screenshot of them offering the bribe as proof.