why do you continue to force business without my concern because the contract has expired

I had a data contract with MTN and the contract expired, I did not cancel the contract immediately hence I was not even aware that it is expiring. they continued in providing the data to the sim which is used by my partner. I lately realized that the bill has increased that is when I noticed that the contract has expired. I called them after few months on billing me with the new prices that I never agreed to or assigned to.

I reversed my debit order just at the beginning of the new month and they stopped the data of which I was happy about that. But lately sent me a statement that includes the month of where the sim-card was not used. When I call them they told me its the system that generate and send statement to people automatically, so i told them my story and they escalated it and asked me to call again after 3 days to my surprise I have received another statement now with an outstanding amount of R1461.66 of which I do not know what is it for when I call the contract department the consultant told me that her system cannot help me I must hold she will transfer me and the call was hanged up.

there was a time where I didn't pay my monthly payment while the contract was still active and the data was cut off but month end I was billed twice, when I asked why do I get billed for service that I never used they said its a contract then why am I owing you now for a service that I never used and I do not have a contract with you this time around?

*** its my number