Telkom's account management mess!!

I have been a Telkom customer since 2012. During this period I have always been on time with payment of my accounts. There was a problem with a Payment in October 2023 which was sorted in January 2024. Ever since then the account has been a total mess. I am badgered by their debt collectors and am incurring fees on debit orders and have been unable to process because of issues on Telkoms side. They were suppose to withdraw R2600 on 31 Jan 2024. They only submitted a debit order for R1900. Which went off. They then went ahead and submitted a debit order for R3200 which was the outstanding amount on my debit order - processed wrongly by them - of R600 and R2600 due and payable on 29 Feb 2024. I settled the R600 with a direct payment after which they again submitted 2x for R2600. In the meantime I am getting emails from their debt collector threatening me with legal action... Where do i go to get help with this since the Telkom call center does not understand this either.