Bad, ********* service from Trudon

I cancelled my Telkom account in November last year, and discussed with Ntando Makhubo in March this year that I would pay Trudon directly for the contract until the end of July 2020 when it ended, and that it would then be cancelled. However, I am still being billed for the adverts since the beginning of August. I have tried many times to phone, with no success, and have written numerous emails. Their response to my last email to their consumer services was to again send a confirmation of the booking, which I do not want, and never agreed to. I am appalled by this service. They send an email titled "Confirmation of your advertising portfolio", when the customer has not confirmed, and has cancelled the contract. I want written acknowledgment of the cancellation as from 1st August 2020, and no more billing.