Nokia

Hi, I have a nokia 6610 - one day it was sitting on my bed for two minutes, in the light from a window - I picked it up and saw that the screen was almost completely destroyed - a very large starburst of green, purple, red, blue, etc now covers almost the entire screen - I'm with tmobile and they say I will have to pay since this won't be covered by the warranty, but I say I did not damage it - has anyone ever seen this happen with this particular model, any nokia, or any other phone? I'm hoping to find evidence of other cases to show Tmobile.

Thanks.