Failing to cancel our contract and still billing m

I requested that my contract be cancelled on the 5th of March 2015 by sending an email to [Email Removed] after being advised by the call center. I followed up on the 13th of March as I did not have any response with this regard. Technicians also came out to our premises because of a faulty line during this time and I also told them that I will move the end of March and they must please ensure that my contract is cancelled. To this day I did not have any response or communication. <br> <br> I understand that there might be a penalty fee for cancelling the contract but we received a bill for April and May again. I am not willing to pay these accounts as we requested in advance that the contract should be stopped. <br> <br> Please help me cancel this contract as it does not help calling the call center...they just refer me to the email address and the email address does not respond. <br> <br> My land line was *** under Daniel van Wyk. <br> <br> Thank you.