Completely embarrassed to admit this but after calling Metro a couple of times and ranting on online forums trying to get help.. I had a bit of an A-HA! moment and it occurred to me that it might just be the phone case. It comes with a built-in screen protector, and I noticed several times that moisture builds up inside it. That moisture could trick the screen into thinking it's being touched. To test my theory, I took the case off.. and I haven't had a single problem since..

I suck lol.

Thanks for your help though! :)