Decreased touch sensitivity/phantom clicks w/ new screen

Had my broken screen replaced a week ago and now I've been having a whole host of difficult to describe issues such as intense jumpiness when trying to scroll, the phone clicking on every single link I go past when trying to scroll (making ads a whole new nightmare), and right now I've had to rewrite this post in 18 sifferent places because the place where's I'm typing keeps jumping around, clicking on different areas of the post, clicking on preview post, clicking on the address bar, etc. When searching on safari, I can only type up to six or sevene characters before my phone clicks on a suggedted search.

Also it's been doing a new, fun thing where the screen stops responding, the home button doesn't work, and, the power button doesn't work. The screen will dim/turn off regularly if I let it sit and then I can turn it back on and resume whatever I was doing but it's incredibly annoying. Happens at least twice a day.