Telkom Mobile - *********** at best, ******** at worst

My issue with Telkom Mobile is still not resolved. R27,000.00 was debited from my account due to ********** calls when my phone was ******. However the outcome of Telkom's ***** investigation showed that I was not liable for approx R26,000.00 of this. I can see the credit on my invoice, but have not received the money back. Even worse, my account is STILL flagged as suspended, so I still can't use my phone. The only feedback I ever get is "Our billing department will contact you". But of course, they never do.