Billing issues

Purchased a sim only deal at Telkom a couple of months ago I've been very happy till I reversed their debit order by mistake wanted to reverse a *****ulent debit order, later got a call from them made the necessary arrangements and made a manual payment which was acknowledged by them they later handed my account over and I got a link which I had to use to make the payment on the 2nd September i paid the required amount a couple of days later Telkom attempted to debit my account even after the payment was made a few days earlier the debit order bounced and my bank charged me for the debit order.In October Telkom double debited me again and claimed that it was for the debit order that bounced which was paid a few days earlier I let it go then called them on the 9th October to find out if everything was in order I was advised that my account was up to date I then requested that they cancel their services since my account was up to date I then spoke to a lady called Rirhandzu Kamela who assisted me with a downgrade today I spoke to a guy called Tama Nkosi who sounded completely clueless didn't even want to try and understand my concern he kept on saying there is nothing they can do since they don't know who Rirhandzu is because she works in a different department I requested to speak to a team leader who blatantly refused to speak to me, This Tama guy then insisted on putting me through to a department which will assist me I was on the line for over 30mins then they eventually decided to hang up,I called back spoke to some kind lady didn't get her name requested that she puts me through to the team-leader then Lucky Nduze eventually decided to speak to me once again I tried explaining even offered to send him my bank statement to prove that the payment was made 2 days early and not only that they attempted debiting on the wrong date but Lucky still insisted that there is nothing he can do I'm liable for the payment that's due which is R425 and according to Rirhandzu Kamela she assured me that the payment that's due on the 5th of November is R69 I need to be assisted ASAP because Lucky and his consultant Tama have made it clear that the debit order is due and it's nun of their business.