asking to donate to their fundraising

A pre recorded message which is set to ring three for times a day for me. They only sent one written communication in writing but call constantly during the day. I'm normally at work and therefore only receive their messages. They seeem to offer a settlement which lapses and then they reinstate. When I've tried to work something out with them they don't want to hear it. It's their way or the highway, very abusive collection tactics.

tried calling my home phone

Called my cell phone, I did not answer. I am on the do not call list, so I don't know why they are bothering me.

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