Samsung A03 screen repair

Two weeks back I took my phone to Globl cellular in galleria mall for a screen to be changed. It was done and then the next day it wasn't charging which as never happened before. I took it back last Friday they sorted it out and the next morning the screen wasn't sensing and I had to drive back again to them. I couldn't be assisted but I was to that the phone now as soft ware issues which never had when I bought it at woolies. I'm frustrated and seriously tired of such service and such inconvenience that is generated by this people.