AWFUL BILLING!!!

I am sick and tired of Telkom and their awful billing system!!!! They keep adding a rejection fee of R202 to my account whereas their debit order system fails, month after month to debit the money from my account! How is that my problem??? Their first excuse was that they didn't have my banking details?? How when they requested a bank statement??!! I had to resend all the documentation yet they still fail to do the right thing and the money just doesn't come off the account. Then they keep adding the rejection of R202. I have been going through this with Telkom for 2 years now. SICK AND TIRED!!!!