Telkom lacks business ethics and integrity

I had a two year data contract with Telkom. I was receiving 5GB data for R99 a month. After the contract ended, then I left the contract to run on month to month basis. In April 2019, I did not receive data but my account was debited, then I enquired with Telkom via their instant messaging facility. The agent advised that data was sent to my number. The issue reoccurred the following month then I called their call centre, the agent advised me that the contract has expired hence I did not receive the data then I asked why did they debit my account. She couldn't answer my question then she informed me that she will log a call. I then request that can she also request that the feedback must be given to me telephonically as I wanted to know request for my money where I was debited twice already.

I did not receive any feedback from Telkom, then issue continue to reoccur. I logged another call and also request that they must call me back. I did not receive any call. I then stopped paying Telkom as I was no longer receiving any service from them and the contract has expired. To my surprise, they have handed me to their debt collectors for the amount that I owe them. But I did not receive any data from them for that amount that they claim I owe them.