Promised refund request

I had two contract with CellC. My 1st contract ended on the 20th May 2021. Prior to that, I was offered an upgrade with false marketing strategy on the 23 March 2021. I was told that my new contract will only be migrated in July after the last debit order by end of June 2021. It turned our to be different from what was promised to me. I received laptop together with a router on the 26 March 2021. Immidiately after the delivery, all data that I had was forfeited as the contract was Immidiately migrated. Totally different from what I was promised. I call them on the 2nd April 2021 and was promise that the issue will be resolve within 48 working days. Due to Easter holidays 3-6. No call was return. I call again on the 8th April 2021,nothing positive came out of that call. The router service was canceled or blocked. I call again on the 19 April 2021.now asking them to take back their laptop and a router. I was post from pillar to post and the gadgets was collected on the 13th May 2021. I called on the 8th of June looking for updates as my account was being debited without any services received. I was told that the contract had been cancelled. Come end of June 2021 my bank account was debited, July it was debited and August 2021. On the 4th August I received a call from cell c consultant telling me that: CellC will refund all my funds debited as I have not used the services since the April 2021 plus for forfeited data as they cannot give back. Now cell c is quiet and carry on debiting my account. My 2nd contract is being paid in cash but they are still debiting my account and am no longer working and their acts ammululates unpaid debit on my bank account. I've written so many email to cell c including calls but nothing seems to receive their response and be sorted out. Please help me get my funds back