Constant harassment over three years. no account

I do NOT have a Standard Bank account. My cell number (which I've had for more than three years) has been linked to a Mr F Whitlock ' s account. I've requested on numerous occasions over the period of three years for them to remove my number from their system. The last two weeks I been getting four calls daily. I've insisted on speaking to managers. Only today after completely losing my cool I got through to the line manager of what I assume is the blue bean call centre. She promised to remove my number. And half an hour later I got another call. I am tired of being harassed by calls and sms.