Magic trackpad is bending (where can I contact Apple for help?)

Hi! For about two years ago i bought a Magic Trackpad (with my Mac mini) and after normal use it started to bend! :O I don't know why, but it has stood on a table when i have used since I got it. My question is where can I send a messages to Apple about this? It's really annoying to use as it is now.

And I also have a problem with if it gets shaked just a tiny bit it turn it self off..