Constant harassment for a debt that isn't mine!!!!

Since October last year I have been harassed! They phone me sometimes twice a day and send me numerous sms's. Apparently a Mr Zuma put my cellphone number down when he opened his Truworths account & then did not pay it! Now, they seem to believe that I am Mr Zuma! Even after I have told each and every single person who has phoned me (up to twice a day) since October 2015 that I AM NOT MR ZUMA! In January 2016, after I threw tantrum over the phone, I was promised that my number would be removed from the system. It was quiet for about 2 weeks but then the phone calls started all over again! I was advised by my attorney to ask who these people were & threaten to sue if they didn't stop. Like clockwork, on Friday, I received another call. I even told the person who called on Thursday to please stop calling. I lost it! I absolutely lost it! I demanded to know who was phoning me & spoke to about 5 different people - all apparently managers of the previous person. Nobody would tell me who they were. I then complained on HelloPeter about Truworths. They phoned me this morning to apologise and told me it's Blake & Associates who have been harassing me! Take responsibility people!