Iphone 5 water marks, home button not working?

Got my iphone 5 wet on friday, it worked fine then suddenly touch stopped working, i went to the tmobile store and told me to put it in rice, so i turned it off and it sat in rice for atleast 48 hours already, i turned it on and i still see water marks on the screen and home button won't work?

I'm sorry, your touchscreen has gone to a better place. But you can have it repaired without losing any data at an apple store or a cell phone repair shop.