Telkom Continious bill after contract termination

After my 24 month contract expiry with telkom in December 2015 I notified them that I will not renew the contract via call and email on the 15th of December 2015. I send a follow up mail on their request on the 22nd of December and made follow up calls on this, each time being notified they are looking at this. It is now the 26th of January, over a month and a half and two billings at an increased rate later.<br> <br> I have not agreed to the service and want the contract terminated as well as my moneys back.