Telkom Debit order Payment rejection fees without my consent.

Hello, I have a Fiber month-to-month contract with Telkom and I am extremely frustrated with them. My subscription is paid via EFT rather than debit order. In August or September 2024, Telkom increased my subscription without my knowledge. On 13 September 2024, I paid my subscription amount via EFT, and Telkom deducted the difference from my bank account a couple of days later via debit order without my consent. As I was unaware that Telkom were deducting funds from my account, I reversed the amount on my banking app. Eventually, I discovered that it was Telkom. In October, I experienced the same problem, and now they are charging me Payment rejection fees for debit orders initiated without my consent (DebiCheck). Telkom is refusing to remit the rejection fees. I want this issue to be resolved asap.

Regards Reginald Coetzee *** ***