Telkom Account Cancellation Woes

Dear Telkom. I am probably the millionth client to complain about this issue. Please sort out your accounts department. I cancelled my Telkom account on the 26th of February. Followed up on cancellation, got a confirmation of cancellation. Have not been using the ADSL line since then- yet magically every month i receive an invoice for usage. Every month i call, and your customer service says they will fix the problem, another month goes by and i receive another account. Get your act together.