Wasting Customers money

About a year ago I complaint about Standard Bank harassing and spamming me with calls about overdue accounts although I am not a customer of them, never was and never will be. Then somebody phoned me and promised me the problem will go away. But a year later all of a sudden, it is back again. Now they say to rectify the problem, they need my id - WHY!!!!!! I am not even on their system - they just got my company's sales number which causes me to loose sales because of all their calls. How does anyway sound if one of your workers answer the phone and an automated voice says your cheque account is overdue. Very unprofessional and a breach of privacy. Really pathetic - you have now set a new STANDARD for pathetic, useless, wasting the money of your customers with all these calls and other peoples money and time as well. That to me is the same as *****ing.