Well, Good Luck with Wally, Kiddo!

"A BIG DENT in the front" is what the camera folks call "Physical Damage" -
which is not covered by a "warranty".

I'd ask to talk to Wally's Camera Dept "Manager" --- not one of the Christmas help.
TRY to convince him it "just quit working" ... and when he points out the
HUGE DING in the front - say "Oh, THAT can't be it --- it's worked fine for a couple
months after that littl *bump* got there." (Try to keep a straight face)

They'll have to send it back to Casio to get an estimate ... but it **COULD** be
something as simple as a connector pulled apart ... but a repair tech will have to open it up and do some checking, inside.
WalMart may say it's been too long for them to be involved; and YOU will have to send it to Casio
for a warranty claim. (Don't mention the Big College FOOT part of the tail!)

However, Little Camera + BIG Dent ... Usually = BIG Repair Cost

/s/ Phred