I am assuming a telemarketer since they never leave a message and call so much. I get several calls from this number and have never answered. I had reached my limit of 30 (blocked calls) so I just deleted one to add this one since I get so many from this number and sometimes get them back to back. As soon as I blocked number, I thought of a new plan. Say "I am interested in Solar. I have been checking out differenty companies. What can you tell me about your company? How long have you been in bussiness what is the company name ect. " Then you will have the information to report them. But do not give them any information...address, directions to your house, when you will be home ect. If they don't give their information over the phone without having yours 1st then you know they would not be someone to deal with if you really were interested. After you got the information you need then say "Thanks for giving me the info I need to report you for harassing me :) But yes I think they do use more than one phone number, but this is the number that comes through the most at my home. Do the same with each number because it may not be the same person, but different people working on a comission for the same company.