I have no idea what was done to your device or if anyone can fix your device now. No one can tell you that without inspecting your device.I checked at my last genius appointment, I have coverage until Nov 30th. If I go to batteries + right now and get the old screen put back on will that JB wipe tweak def make it so my phone doesn't freeze up in calibration?
Like I said, I would get the original screen put back on if that is possible and demand your money back from the repair shop you took it to and then take it to Apple to see if Apple can fix it.
Since you have AC+ you would have only had to pay $29 deductible if you took it to Apple in the first place.
If the repairs shop doesn't have the original screen, then you are stuck dealing with the repair shop you took the device to.