Thanks for the warning. On a related note, I currently use offgamers for power levelling, it isn't the cheapest out there but it generally is a lot safer. (no troubles whatsoever and have met the promised deadlines).
I've been looking at this site, too.
Apparently they'll give you 5x compensation if they get your account banned with even a compensation agreement (not sure how effective/genuine this could be) to give you piece of mind, anyone that has used their service, it would be appreciated if let me know