Unsolicited harassment

How much does it take for a company to understand you do not want to talk to them or are not interested in their service. have been bugged by this company the whole week. First I ignored their calls but alas, they have tried numerous times per day. I eventually gave in and answered to politely tell the agent to PLEASE remove me off their list. Has that ever worked? I think not. They kept calling which I ignored again and this morning, Saturday morning none the less, I answered again and asked the agent, firstly, what I need to do for them to stop calling me and secondly where do they have my permission to contact me as I have to give permission for this. She promptly hung up without any answer or professionalism.

I have never given permission for any unsolicited contact, EVER. In fact, I have gone out of my way to register on all kinds of systems to remove my details.

I understand that there is a need somewhere for these services but surely a company with the resources to BUY a list of names of people will go through the necessary due diligence to ensure that is a vetted approved list of people interested to be contacted?

It is beyond me how this is allowed to happen and from a company that claims NCR status and all kinds of associate logos on their site.