Have found that Humane society of the United States (HSUS,) HQ in Washington DC, uses professional phone solicitors. Those solicitors are extremely rude.
Received calls from them 3-4 times a day, many times as late as nearly 9 PM. With caller ID and special ring tone, we just do not answer phones unless we know who it is. Contacting HSUS did not stop the calls at all. In fact they started calling only late at night.
When I got sick of it and answered the phone, the solicitor's attitude was that you "gave" us your phone number when you donated and we have every right to call you.
Heavens, yeah, all day, every day for weeks.
Do not donate, and if you do, don't give them your phone number. Also, HSUS sells your information to dozens of other charity too.