Constant harassment from call centre

This company has been persistently calling me even after telling them numerous times to remove my number from the system. This almost comes across as harassment. I understand the need for sales but surely one should respect when someone asks them to stop calling them.

Even if I ever wanted to buy a product from this company, I would never proceed with it purely based on this horrible experience. I have people constantly calling me from durban , Johannesburg and Cape Town.

Please take my number and my details off your system. Kind regards, Taneel Vandayar