Pathetic Customer Service

I called in to change my banking details on 22 October. The consultant clearly stated that on the 1st of November, the debit order will run on the new account, IT DID NOT. When I called in, another telkom consultant said the reason for this is because the banking details were changed late. The consultant then sent me an email saying at the end of November, the new bank account will be debited, IT WAS NOT. Once again the old bank account was debited! I called in again now (2018-12-05 @ 14:03) to ask why this is happening. The third consultant now told me that the new account was loaded but was not marked as the primary account. She also went on to say that since we changed the account now, the next debit order will again run ON THE OLD ACCOUNT and only run on the new account in JANUARY!!! Will Telkom allow it if I paid less to cover for all my missed debit order fees that the bank is charging me? Probably not! So can they please solve issues better. (And to think, I made an effort to call in when Telkom is the one that messed up!) (Telkom thinks they're "big enough" to have pathetic customer service because there's nothing we can do...)