Telkom ignores cancellations

I app**** for a Telkom LTE router in Jan 2021. I converted to fiber in Jun/Jul 2021 and ended my contract with Telkom in July 2021 via their on-line customer service platform. They informed me about the early cancellation fees, which I accepted and paid via debit order. To date, they are still deducting money from my account every month. Even worse, the amount they deduct keeps escalating, as though the cancellation never even happened!

Telkom is like an ex-boyfriend that keeps showing up at a family reunion. I'm open to suggestions on how I can free myself from this nuisance. I have never received a confirmation mail of my cancellation either...