Continuous harassment by MBD

For the past number of YEARS I have been receiving phone calls from MBD (who act on behalf of Truworths) who claim that I owe them money. No matter how many times I tried to explain that I DO NOT have an account with Truworths, they keep on pestering me. I have NEVER had an account with Truworths. My particulars are: Dr BP Badenhorst Gerhardystreet 10 Riebeeckstad Welkom cell: ***