How does one actually terminate services?

Hi Who do I contact to deal with Telkom not cancelling a contract? We terminated services with a month's notice in Feb. We've received 3 invoices since. One was for money owed to us. The next one reflected an amount for adsl less the amount above. We paid the R35 stated iut if good faith and made repeated attempts to rectify the problem. However we cannot get a reply from anyone regarding why the ADSL wasn't stopped. The termination form clearly states this service was to be terminated along with the phone line. Today we have received another invoice for this service. We are using fibre from another supplier so are not using any Telkom hardware at all.

I would like a name and phone number of a person who will actually help.

Thank you.

Regards Kath Kenyon on behalf of my irate husband (Justin Wimbush)