Cancellation taking 3 months

I've cancelled my account in JANUARY!!!!! and I've forwarded it AGAIN in February... when will my account be cancelled. I moved to Cape Town in January already, and each month my account just gets bigger and bigger... Cancel it please - I've send the letter and form to Cancellations more than once!!! You can remove March and April's fees you've added since I've cancelled in January already, not my fault Telkom aren't doing their jobs properly.