Telkom services is horrible

I have been with the telkom network for over 5 years now and always recommended their services to everyone even with all the negative feedback I have from others I didn't have an issue with telkom but they have seriously let me down now. At the beginning of April I received an invoice from them and the bill was incorrect. As we on lockdown I did try calling them but I know it won't be easy. So on my invoice it said I'd be debited on the 6th. And that didn't happen. Realizing that there would be a penalty for that I did do an EFT for the correct amount that I know is what I always pay because I know for a fact that I usually pay R150. I refuse to pay that R800 and something for a phone that isn't that much. I requested they call me back twice then someone did call me but apparently they had to transfer me to the mobile side of it. And the call cut. So I requested a call again. I even searched for the accounts email address but there's no email address for them. I have tried everything to get some feedback but the app is useless, calling is useless and well even trying to email your support email and even those other email addresses are very useless. Very upset as they tried debiting my account three times in this month and now I'm sitting with bank charges as well. Please tell me how is this good service??? Telkom you really need to get someone to get back to me! Or at least provide me with an email address or number for you account department. If my business with you guys isn't worth your time to assist me please let me know as well. I'd be glad to take it to a provider that is willing to assist me.