Brooks and Luyt

I have been trying for more than a year to get Brooks and Luyt to sort out a issue regarding a Nedbank Loan account which I DON'T HAVE. I have never dealt with Nedbank let alone taken a loan from them. An individual has somehow used my cell number as a reference or whatever for on his application with Nedbank. He has obviously done a duck and now Brooks and Luyt are harassing me . They have no details of myself yet continue with threating SMS's. I have emailed a Sharon McDonald with promised from her to take my number off. NOTHING DONE. Emailed a rmiles @ b.. Did NOT even get a reply. Phone calls all promising to take my number off nothing done. As of today I received a SMS stating Nedbank Loan account remains unpaid .Legal action to continue. I have never had financial issues in my life now receiving this. WHAT CAN I DO????