Cell C - default account

I paid up my contract with cell c in December 2019 and called for the contract to be cancelled. A year later on my bureau I had the account with an outstanding balance. I called to enquire and I was told I am not owing. A month ago I was notified that I have a default entry on my name by cell c. I called to check why am account that was supposed to be closed in 2019 is still not closed. The agent advised I have no active contract under 2019.

The payment was done via my banking App and unfortunately the bank keeps the proof of payment for only 12months for payments done on the App so I only have the bank statement showing the entry only as my back up. I have forwarded it multiple times with no help,

I have decided to pay the outstanding balance and would like for you guys to remove the default on my name.

Your service is becoming the worst over time as this is not the only problem I have with you. Last month I took a contract with you and the agent failed to tell me that they were going to give me a contract Sim separated from the contract phone that will deduct separately from the phone debit order we agreed on. Now I must waste time going to the police station to write an affidavit and log this incident separately also.

It's is annoying dealing with you guys