Telkom debit order

Ì had a very bad experience with Telkom after being a loyal customer for some years,my monthly debit didn't go through around July last year, I got a message from Nudebt company on behalf of Telkom to pay an amount of R460,00.I paid through eft.The following day i got the message to say they gave me a wrong reference number.i called the company and they told me that the payment will only reflect after some days. Telkom stopped the services,I called them daily and I was only advised to send proof of payment of which i did daily to different consultants.My matter was never resolved. Telkom is now debiting now and then and I get bank penalties every time they debit, since this dispute monthly i am in areas of around R390.00,though I blocked the account.

My argument is that I tried to contact them without any intervention from their side,now I am appearing as a bad payer. This is so unfair.