Getting repeated calls over and over again every day from 201-535-3618 (follow the link for people bothered by this telemarketer). You can thank the people that the Secretary of State in the state of Washington says employee, and have employed, these people, Outreach Associates, Inc:
Children's Defense Fund
Environmental Defense, Inc.
Habitat For Humanity International, Inc.
Jane Goodall Institute For Wildlife Research, Education & Conservation
League Of Women Voters Of The United States
Phillips Collection, The
Public Citizen, Inc.
Southern Poverty Law Center, Inc.
and many more
They will claim they are a charity exemption from the do not call list. So perhaps they are to breaking the law, who knows. But tarnishing their clients with the extremely bad practice of calling people over and over and not leaving a message tells you what they value - and it certainly isn't you. I suggest telling any charity you support that you will not support them supporting a company that intentionally bothers you. If they do not make a public statement condemning such practices and publicly state they will not work with any contractor that behaves this way don't give them your money.
Any of the charities listed are welcome to add a comment linking to your response that you will not do business with such companies and specifically what you have done about this company.
Related: Make $500 for Every Illegal Telemarketer Call to You - Charity Telemarketers are Bad - Make the World Better - Microfinancing Entrepreneurs (Kiva doesn't support bothering you like those above do)