Harassment!

This company continues to contact me despite telling them not to and asking them where they got my number from etc. They use different numbers and company names, insist on trying to continue the tele sales call. I tell them to stop harassing me with unsolicited calls, but they continue. I have asked politely and rudely to be take off their mailing list. Now I need to report them to the Consumer ombudsman. I see there are numerous complaints about them on HelloPeter and other complaint platforms.