New broken phone, no support from Cell C

I upgraded my wife's contract at the beginning of October 2020. One week later the phone gave problems, not charging. She took the phone in to Cell C Malmesbury, where they told her that they will send it away for repairs. That's the first problem, the phone was to be replaced. She got the phone back two weeks later, with the same problem. Since then the phone was send back 3 times, and came back and still not working. Yesterday (23/02/2021) she again fetch the phone, still not working. the "new" charger trip the earth leakage in the house, and if you try another charger, the phone still not charge.

I spoke to CellC's repair department, with no success. So at this stage I'm paying for a contract to for which I can't use, I already bought a cheap replacement so that she is able to go on with her work.

What will be my next step, well, I don't know, Cell C at this point in not coming to the party, and I hope this will change the situation. Their after sales service, well, there is none.

Kind regards Altus Smit