Bad customer service

Hi My name is Analo Jacob and I am not happy with Telkom Billing Department. I have data contract with telkom paying R320 for 2 sim cards. On the 25 June 2024 I made eft payment then telkom deducted on 27 June 2024 so I reversed the debit order since I have already paid. So now I received a statement saying that I should pay R533 month end July. I called last week spoke to Simphiwe who advised me that I am being charged interest because a debit order was already put in place for the 27, I requested a call back from the manager on the 08-07-2024 and I am still waiting. I called again today and spoke to Thando who put me on hold for more than 15 minutes after I requested to speak to a Manager while holding not sure if the call was dropped or what happened but I was asked to rate the call without getting any feedback. My number is ***