This company calls on behalf of charities you may ...

This company calls on behalf of charities you may have donated to before or signed a petition something like that - they want you to sign up for regular donations. Sounds nice enough sure but the major issue is they take telefundraising a level further to nearly harassment with the constant calls up to 5 times a day and pushy sales/objection handling techniques and telling them no thank you please stop calling me will never ever be enough to stop the calls.