Telkom worst service experience

I have a Telkom phone contract which I recently upgrade, in November to be specific. I have agreed on the 25th debit order date. Since the 25 falls on a Christmas day, Telkom debited my account on the 22 and the was not enough money on that date as my salary only came in that very night. So, the debit order returned due to insufficient. I then did an EFT payment to ensure the contract is paid. on the 30th, Telkom debited my account again and this time the debit was successful. This means I have paid twice for December. On Monday I received a statement showing money due for January which included a charge or fine of R202.70 for a failed debit order. I contacted Telkom billing dept and queried why am I charged the penalty for failed debit order while they got the money on the second attempt of the debit plus the eft payment I made. They refused to cancel the charge and say the debit order failed on the 22nd and them debiting my account again was a favor and Telkom going extra mile for the client. Worse the successful debit order amount is still not allocated, and they are going to debit my account more for January while sitting with the month premiums. What hell is this Telkom people thinking?