I have, they can and do get back some money for you, but and this is the big one for me. They don't alway tell you all the little things that you need to know before you say ok, i don't know if it's bad selling or bad staff but it might just cost you more than the amount you get back in the end. Once you are on there books you will get alot of calls and text's, even when you call an end to it all, as I think that they just are out for the sell and not so much for the after sale's. Go in to this with them with your eye's very much open, and go slowly, you are in control not them, alway remmember take what they say with a big pinch of salt.