MTN *****

I had a Wi-Fi account with MTN. I phoned in January 2020 to get the settlement amount to cancel this contract. I went in to the branch at Cape Gate and paid the amount of R1277.91 to cancel the contract. Phoned them twice to make sure this contract is cancelled and it was confirmed by them. Today an amount of R3194.17 was deducted from my bank account. Called them just now and they will do an investigation within 72 hours. Moses fron MTN confirmed that he can see on the system that my account has been cancelled in January. How is this possible? This is defnitively ***** by MTN!!!!