False report to ITC

I recently app**** for a company credit card, but was denied because the bank said that DSTV had reported me to ITC (TransUnion) for failing to pay my bills. I de-activated my DSTV account early in 2014 and haven't used it since. At the time, my account was in credit, so they actually owed me money. After speaking to the consultants, they said that they could see that the system automatically switched my account back on in July 2015, without my knowledge. They promised to reverse the charges and withdraw the (wrongly) reported ITC listing to clear my name, but nothing yet. It's been more than a week and I've had no reponse from them yet. When I phoned the 1st consultant, she put me on hold for more than 15 minutes, so I phoned again and explained the situation to the 2nd consultant, who said they would mark it as urgent and get back to me the next day. Nothing. Regarding my account, I received no notifications, emails, or calls when it was activated, or when my account showed that it was overdue. They simply reported me to ITC, which has given my company a bad credit rating. Now it seems that I'm simply being ignored, while my company gets a bad reputation, because of DSTV