MBD credit collections ****!

Where do I start! This company has been chasing me for a Vodacom business debt that I do not owe. For the past over two years I repeatedly get phone calls from this company about this non-existent debt for payment. I visited a Vodacom shop today and they advised me that there is nothing owing as we would not have been able to transfer our numbers to a prepaid account without paying the outstanding on the business account. Which we have done when we transferred to prepaid. I am sick of getting calls from this company and I am annoyed with Vodacom for handing us over for debt collection for a debt that is NOT owed! Stop calling me please. Go back to Vodacom and sort this **** out with them. Again, they confirmed today that we not owe them any money. So go away!