Debit account and will not cancel contract even though device was returned to Telkom

I wanted to purchase an online contract with Telkom which I did for an iPhone. The next day someone contacted me and gave me the run down on the contract etc. However, I was not told that the phone does not come with the charger and iPhone pods. However I was not told that phone cannot be used with the old charger as this will damage the iphone12. The sales lady did not explain anything to me properly. Upon receiving my device, the iPhone comes with no charger and so how am I supposed to charge this phone. I decided if this is the attitude of Telkom at this early stage of the contract then not sure what will happen of, I have a real issue during the contract. However, trying to get a hold of someone to help me was another story None of the email addresses are working. I forwarded multiple emails on the same day and all emails were returned. I tried to contact someone to assist and still no one would assist and wanted to assist me. Eventually someone decided that they will forward the mail on my behalf and try and help me. 2 Week went by and no one came to collect the Cell phone which was still in the box un-opened. I refused to take the contract and didn't want them to debit my account and therefore I wanted to cancel the contract within the 7 days period. I contacted someone 2 weeks ago to collect the device and after getting angry again with them they send the courier service on the Friday to collect the device. Now after all that they still go ahead and Debit my current account and I have been trying to contact them to credit my account and to date noting has been happening. I find that Telkom is dishonest, and no-one is willing to assist, and everyone is passing the bug. I would have gladly stayed with them and paid for the contract should they even had tried to retain me as a customer, but no effort was placed on their side. It is sad to see the service from Telkom that is gone down to the ground. I would like my funds reversed and I don't want any dealing with this dishonest company ever again. I logged a query again with Telkom on the 7 June 2021 and Andile Tawu promised to call back with a reference number and I receive no call from her. She says that she sends through another email to cancel my contract and someone will contact me and notify me that it is done, yet I have heard nothing. I bill has now doubled as I reversed the other payment with the bank. This is becoming frustrating as no one will listen to you. I just want Telkom to stop debiting my account and cancel the contract as I DO NOT HAVE THE DEVICE.