Poor service

I have received incredibly poor service from Telkom over the past few months with regards to debit orders. I typically used to have a very good experience with Telkom everything worked as it should. But then issues started occurring when debit orders just were not attempted and when attempting to pay via their portal my account reflects that there is no number connected. I receive invoices indicating that the amount will then be debited on a specific date and only R10 of the amount is debited. I have to fight to make them take my money and I set up a debit order so that I don’t have to worry about physically making payment myself. It’s impossible to reach out to them. I scheduled callbacks multiple times and never get called back. I finally reached them and was told to EFT the amount and have done so this morning. If my credit score is affected by this negligence on their end I will be furious, I received a notification that I was sent to a debt collection agency without a word from Telkom and after a debit order for the incorrect amount was taken. I would like for someone to claim ownership and assist me in ensuring this does not happen again