Unprofessional and inexperienced consultant

Cell c is the worst service provider ever with a hole lot of inexperienced consultant . I had a 2year contract with them since April 2019 to April 2021which I paid in full .I knew I don't owe them because the contract ended.

Late 2021i received letter that I owe them R790.00 when I called to find out ,a consultant told me that I owe because I was supposed to call in and cancel the contract since I did not cancel then they change my SIM card into a prepaid sim .I don't know and I didn't understand how and why I didn't get answers for that til today because the same SIM card they change I reported it to them to cancel and block since it got lost with the phone however I was paying my full monthly installments as agreed. A week later I called in again got a different consultant and told me same thing to pay cz it's massing my credit score negatively. September 2021i paid the amount in full and I sent proofofpayment to ***,collection queries and ***.

2 months later I received a letter stating last notice to avoid hand over for the amount I paid In September.i called cell c again and they said I must send proof of payment again and I did.then I received an email tha I should not have paid that amount now I have a credit balance with them.

I must again send the proof of payment so they can refund me consultant did and give a ref no *** and nothing happened I called again consultant give me onother reff ***7still nothing . 2weeks later I then called cell c again for follow up I got a lady by the name Lehobo *** she promised to escalate but still I haven't hear anything from cellc till today.

I want my refund of R790.00can some help please I want my money 💵 hle. Regards Samukelisiwe Dlamini