Sorry to hear about your bad luck.
I was in Jessops today and overhead someone asking the staff if they repaired cameras.
Yes was the reply but it isn't cheap. We send the camera back to the manufacturer and prices start from 80 quid for basic faults.
I'd be inclined to purchase a similar camera as well although that's probably just what you didn't want to hear.
Welcome to Pixalo from it's second newest member after you. If you do decide to get a new camera try cameras2u or a similar respected Photographic web sites instead of Jessops for your new camera. I bought a UV filter from them this morning at 29 quid and found the same one online for 10 quid cheaper. Jessops in my opinion are like PC World and prey on 'Joe Publics' ignorance of prices.
Dan