MTN unable to cancel contract which was due to be cancelled on 6 February 2020

I had taken a data package with One2One on the MTN network. I had cancelled the contract in December and they had confirmed that the contract will be cancelled by 6 February 2020. I had contacted them several times thereafter as I was credited with the data and my contract has not been cancelled. The call centre agents as well as the manager Blanche are blaming MTN for the fact that the contract has not yet been cancelled. They have advised that they had submitted the cancellation to MTN before 6 February and can confirm that the cancellation request has been received by MTN, however MTN has not cancelled the contract as a result of technical issues and they cannot assist further as the supplier MTN are at fault. They cannot supply me with a turnaround time during which the contract will be cancelled because MTN cannot provide them with this information. I was advised that they can not tell me when the contract will cancelled as this is now with MTN and I should just wait. MTN please can you assist with cancelling my contract and porting my number to prepaid. Further I don’t understand how you do business with a company that firstly has no ability to contact you to escalate a matter and get resolution and secondly do business with a company that bad mouths MTN.