FAULTY BRAND NEW SAMSUNG S20 PLUS

I got an upgrade and received the Samsung S20 plus on the 6th July, 2020. When I tried to charge the phone, the charger would not make contact properly. I had to fiddle and eventually the phone charged. Some 5 days later, I wanted to charge the phone again and it would not charge. I tried other universal chargers and eventually it charged to 50%. I took the phone to Cell C Blue Route and Kimberley told me that these type of chargers are not great and I should buy a cable charger. I told her that the phone was brand new and I should not have to buy another charger and she was not interested. I bought the charger on the 22nd July. I then complained to Cell C head office and was told to take the phone in as an "out of box failure" and insist they take it in. After the treatment at Blue Route, I went to Longbeach Mall Cell C. The sales person told me that they should give me a new phone because it was still under warranty. They decided to repair the phone and I dont see why I should not get a replacement because of the fault on a new phone. I have now been told that the phone must be collected because it is not an out of the box failure. After being told by two reps of Cell C that the phone should be replaced, I do not accept that I should keep the faulty phone. I will cancel the upgrade and move my 3 lines over to another service provider.