Thats is very dodgy what they did mate. I can't find much info on this company but a quick Google of the "subsidary companies" marked on their site-> Gsmsolutions.ie.Phonevolts.ie.Unlockcodes.ie.Ipodrepair.ie and I find alot of bad bad stuff coming up about these people.

My recommendation: Go in to them in person and demand your property back. Phoning them will not resolve the issue in my opinion.