Telkom determined to ruin my credit profile

I regret the day I ever took out a contract with Telkom!!! My agreement with Telkom is that they debit me on my salary date and for 3years they managed to get it right then I took out 2 more contacts with them, still instructed them to debit on my salary date and since October 2022 to date they have failed to do so. They have gone gone and selected a debit date that is 15days after my salary date and no one can give me answers how that happened. There is absolutely no escalation process at Telkom so you cant even speak to a line manager cause they are always in meetings, they always to call back but they never do and the agents can never give you the managers contact details cause it's not allowed. I have spoken to more than 10agents and they all don't know how to amend a debit date. I have sent emails to 2 team leaders none of them responded. The other day I refused to hang up and sat with an agent for an hour on the phone until a team leader Tony Venter decided to take my call who promised to give me feedback on the same day and it's now a week later and she hasn't called. Telkom is a ****a shop they have no sense of urgency, they are determined to ruin my payment profile nor do they care about customer centricity!!!