iPhone 6s Plus Screen Repair

I booked my iPhone to get the screen fixed, I had a small crack at the bottom near the home button which was annoying, the phone otherwise worked perfectly and there were no other issues - they replaced the screen speedily and the service was great.

I left the plastic screen guard they supp**** with the phone on for the weekend as I didn't have a chance to get a screen protector, the screen didn't look that clear & the touch wasn't working that great, I thought it was just the plastic cover. I took this off and I was wrong, the screen itself wasn't clear, the touch was not responsive and it felt like there were "Dead zones."

I contacted weFix gateway right away to report the problem. They were accommodating and came to collect my phone from work to assess the problem, a few hours later I get this reply:

"Unfortunately upon assessment, the technician has found that your device has touch disease and this cannot be repaired as it is a main board fault. We have tested your device with new touch pads and the fault still persisted intermittently. Should you have insurance we can produce a damage report for you to claim for a new device. We will also be refunding you in full for the screen which you had paid for..

Kindly furnish me with your banking details so that i may process this in the interim. I have replaced the touch pad with an old cracked screen and the device is working however i suggest you do back up your data soon as this is intermittent and the device can switch off or stop working at any time."

They then returned my phone to me with someone else's really broken, disgustingly dirty screen, the phone now overheats, I have to charge my phone TWICE a day and I actually cut my finger on the glass trying to use it. How can you return my phone someone else's screen, refund me and think all is okay? I have been in touch with them for a week now and am still waiting for a response.

On another note, the cracked screen works better than the new screen they put on, I asked them if they use original parts hence the bad quality display!

This is 100% not okay, and not what I would expect from a company whose motto in #WeMakeItBetter - You made is worse.