Account Nightmare

Where do i begin :( I cancelled my mobile account with Telkom the end of November as we were moving out of the Country the end of December. Here we are at the end of February and they are still trying to deduct the money off my account even after NUMEROUS calls and even after i visited a Telkom branch at the end of December to try and get my contract cancelled. HOW MANY MORE TIMES DO I NEED TO SPEAK TO THEM????? Why are they still deducting the money off my account??