Stop with this rejection fee nonsense!

I have been with Telkom for a few years been having problems on and off. My first 2 years contract was a messed all caused by one of their employees, which finally after a year and half was sorted out. My second term 2 year contract went bit easier but i closed my account where debit orders went off because also had a problem with them debiting my account how they like, i made arrangements that ill be paying cash which i always do before the end of the month because i get paid after the 26th. And according to Telkom you need to pay 15days before the debit order date if you don't want a debit order to go off. I keep on asking them to change my date so that I have enough time to make payment. But no they don't so I keep on paying Telkom a debit rejection fee! So what now I should just keep paying extra for their mistakes? I NEVER skip a payment but it's ok if they do this? And lastly what can't they understand that I don't want them to debit money from my account left right and center, I stopped this debit orders from going off because of them in the first place! Today I spoke to Mpho who told me they will change the date which will let me pay before 15days so thank you Mpho. But I hope this is the last time I have this problem, because I keep on losing and not winning!