******** contracts

I have a business contract with Telkom where I pay R299 monthly. I received about 20GB data and don't even use all of it. Telkom debit amounts of my bank account which is more than my contract. First it was R120 to R500 extra on top of my contract. I laid a complaint referring to ref nr. *** / Case nr. ***9. It was on 17 July 2015 and has been calling ever since to do a follow up. It's almost a month now and still waiting. My line was cut last month and I had to pay them first to reactivate it again. Now my accounts builds up and Telkom don't have an explanation regarding the extra amounts they have billed me. What a total ****!!! Be sure to watch your invoices and debit orders from Telkom.