Telkom owes me money and suspended my line for no reason (I would really like to know why)

I am extremely disappointed in how Telkom operates.

My Telkom account is up to date and they've suspended my line - Knowing how poor Telkom's service has been lately, this means that the problem will probably only result in me having to stand in a long queue all day long at one of their branches.

Telkom is quick to suspend (a fully paid and always up-to-date account) but they owe me money for a rebate from about a year ago. I've sent emails and faxes but because Telkom owes me money, they COMPLETELY IGNORE me. This is unacceptable!

The account they suspended can only be my late husband's account which I've had a problem with for how long and I've been to their branches.

Telkom please fix this fault and this mess you've created. I am a very disappointed customer and I feel like cancelling all my services with Telkom if this isn't resolved SOON!