BAD SERVICE - VOXCONN/IBURST

I have had an account with Voxcom / Iburst for the past 3 years.We decided to upgrade from their 1mb wireless service to 4MB Telkom ADSL.So we mailed Voxcom to cancel our account -March 18.They told me the account will only be suspended at the end of March, but one final payment would have to be made since it's a month to month account. But I always pay for the forthcoming month. So to my understanding, why should I pay for April, if the account will be off at the end of March. Shouldn't the account only be terminated at the end of April?So I asked them NOT to suspend the account anymore, because I'd rather give my modem to a friend and continue using it that way than pay for a month extra.But last week the account is off and they deduct money from my account for April anyway. I have spent all day with Sean Esterhuysen from Voxcom to get him to un-suspend my account, but now he wants me to purchase a separate bundle which I will have to pay for upfront AGAIN.So they are taking payment for a whole month in which my account is off, and that after I asked them NOT to suspend my account anymore. He is refusing to give me his supervisor's nr.This is ridiculous and I want my money back.