Bad customer Service

I bought Huawei Y7P at The Fix Greenacres on 26th November 2020 . When I get home I installed the software and other phone updates. I noticed that the phone is slow and its difficult to press and there white lines showing. I continued with the installing telling my self that it will stop after installation but it did not stop. On 27th I took the phone back to the store. The staff took the phone one by one making their diagnosis as if they are the technicians asking me if I did not drop or bump the phone. And my answer was that I was careful with the phone I did not drop it. Then they said they forgot the password for Out of Box Failure to log the issue online. Then they say they are going to email 3G mobile. Today- 01 December2020 I went to the store to check I found that the phone is still with them in the store and later on I got the call from one the staff asking for my ID number and next of kin datails so its clear that I was not taken serious because my details and statement were not taken properly. I'm really not happy with their customer service its like they do not know their job decription. Even the manager was there inspecting the phone instead of making sure that the phone is quickly sent the 3G mobile. It is day 5 now I don't have a phone