Metrofibre not able to assist clients

We moved to a new address and I requested a COA. Where we moved to there is a termination point meaning according to COA form I was supposed to be charged R575. I was charged R750. I paid only the R575, and now my account is in debit with R175. for 2 months now my debit order has been returned as I had amount in my account for normal debit amount. I have been charged R100 each time it gets returned, and it is not my fault. I have logged numerous tickets which either gets closed or are not attended to. I have also asked numerous times that my phone nr gets changed, yet on the app it still shows my old nr. I am now tired of trying to sort this out. Seems no one is able to attend to my query . We moved into new premises on 1 June 2024......and I am still trying to sort this out