Abusing a financially constrained customer

I am literally so sick and tired of the abuse I’ve been getting from Telkom for the past couple of months. I’ve had financial difficulties in the past few months and requested they cancel debit order on my accounts so I could pay via credit card option on the website. Debit order was NEVER cancelled, and for every bounced payment they charge additional R200,that makes no sense to be charging additional fees to someone who is already constrained financially and trying to keep the accounts up to date. I signed up for R449 deal it’s now R479 which is fine and manageable for me BUT the R676 you are charging me monthly I just CANNOT AFFORD right now hence this month I’ve paid R479 because I’m just enough with the abuse!!!! Whats even more ridiculous is that you are sending debit orders to an account that was closed and then come back and charge me additional fees