Telkom must go

Telkom is the WORST service provider ever. I have changed my banking details in May 2024, i have called in to confirm, everytime i call they still have the old banking details. I end up paying twice the amount of my original bill for the past 5 months. Every consultant has a different thing to say, they advised they will refund me but ii still have not received any refund. I called again as my wifi was disconnected due their negligent and untrained staff. Tghis month i will have to pay double the amount once again to be reconnected. My question is this....when will one agent or manager successfully change my banking details? If they are unable to to change it on their system why not provide a tangible solution to my problem? I do not recommend anyone to use telkom as their service provider they are the worst ever with the most pathetic customer service!!!!