Cancellation of Vodacom contract NIGHTMARE

I had/have a Vodacom contract, that I chose to terminate.

I contacted Vodacom via their app and requested an Early Cancellation. Upon receiving this, I filled in the paperwork, sent it through to the relevant email address (***) received a mail response stating I would be attended to. This cancellation was done and sent through on the 15th July. I paid up all outstanding fees, I was then billed for August. Which I then begrudging paid.

I have been billed again for September, which I have complained to Vodacom about, yet nothing has been done. I have also now again been billed for October. I am refusing to pay this, as I have followed procedure and cancelled my contract.

Please see attached the cancellation letter received from Vodacom, as well as all mails sent through to Vodacom.

Calling them, does not help, as I get sent from pillar to post and get told I cannot be assisted.