MTN Poor Customer Service

0n the 16th of April I called the Call Centre to Early Terminate my MTN contract which was due in December 2024. The Call Centre Agent provide me with an amount of which I went to go pay it at the nearest MTN shop. On the 20th my monthly debitorder was still debited on the 20th. Two days later I called the Cancellations Department just to followed up that my contract was cancelled but I was advised by the agent that my contract still shows as active the initial agent who assisted me on the 16th of April didn't note it as a CANCELLATION on the system and it shows that my account is in credit and that they must refund me the money.Last night I received my monthly statement via email and it still shows that my account is in credit and that my account will be debited again for the month of May. This is now really pathetic, can someone please cancel my contract on your system hence the reason why I moved to another service provider due to this Poor Customer service.