Debiting closed account!!

Kindly note you Telkom has been debiting from a closed banking account and I have been paying via Easy pay at my local supermarket. Please note Balance brought forward on 5th October 23 was 0.90 cents, did not make payment as too drive out R150 petrol to pay a 90cents, thought I willl pay it with my next payment, To only receive a invoice on the 5th of November with being double charged and rejection fee being charged to my account Please assist as I have 2 contracts with Telkom and for the past 3 months I have been calling to cancel the debit order.

Every month since the my bank account has been closed I have been charged a debit rejection fee to my statement even after I have requested Telkom cancel the debit order on their side.

I have been paying extra and last month I was handed over for an arrears of 90c. Friday 17/11 I had received a call from Telkoms collections/legal department where I had explained to the lady that they are guys are debiting from a closed banking account, I requested to speak to a manager who was not available and I was promised a call by Monday the 20/11/23 . The manager Menzi Magubane has still not called even after I followed up on the 20/11/23, I'm extremely disappointed at how your clients are treated and to date i have not received a response.