WHAT A HINDRANCE! IS IT CAUSE FOR A CASE OF ABUSE?

Despite my NUMEROUS assurances that I have never heard of a Mr Dheepak Imraj, the Standard Bank Loans department continue to call me on a regular basis at any time of the day. This morning's call at 7:10AM, during our pre school chaos, was the last straw!! I have requested that my mobile number be removed from their system as it is clearly incorrect - I have been assured that this would happen. I have requested to speak to the team leader, stated my case and been ignored. I have requested a call with the manager, again, been ignored. I have requested that reference is made to the supposed data base of recorded calls to confirm my NUMEROUS requests to update and correct their information to exclude my mobile number, to no avail. I am desperate! This has been ongoing for YEARS! No exaggeration! YEARS! I am at the point where I want to take them to small claims court or lay a personal injuries claim for hindrance and abuse. Please advise!! I can not believe that an international institution can continue to make this ANNOYING error. THIS MUST END! Would anyone have any advice for me please?!