If you have a Consumer Affairs Department in Sweden, I could be contact them as well. Contact a lawyer. Sounds like a camera failure to me, especially if you have one lens and haven't removed it since it was put on the camera by the salesman.

Sounds like a crock to me. Ask to speak to the service manager where you have the camera, keep going higher up the food chain until you get somewhere better. Ask to speak to the complaints department, etc, keep pushing and don't take "It is your fault" as an answer.