Telkom Billing for services not used after notice given

I closed my account in February 2018 as I moved homes and went with Fibre through another service provider. I received acknowledgement via email. I gave my one months notice as required. To date, Telkom are still billing me monthly for a line I do not have access to, I cancelled this. In fact you owe me my deposit and all the extra money I have been paying every month to keep my credit record good. Sort you company out as this is disgusting and shocking service. I no longer am at this address nor do I use your services anymore. You sent me acknowledgement but I still receive a bill every month!!!!!!!