Bummer
Well this is a bum deal for you. You have no recourse. None. Here is the problem. Apple could help you but it isn't really in thier interest to. You will likely go buy a new phone and now some schmuck that couldn't afford one has one and they get your money for a new device and then the schmucks money for the apps they buy. All they do is plug it in and setup as a new phone. In fact you can take it to an Apple store and they will do it for you without asking why it was registered to someone else. My father in laws iphone was taken at the court house. They got the lady on video. She was there for a court hearing and they had all of her information, name, address, etc. The Sheriff vowed to try to get it back. They had her clear as day on video mind you! Nothing ever came of it because at the end of the day it is a phone and nobody but you cares. I am sorry for your loss because it is such a frustrating, and upsetting situation.