These people refuse to go away and I refuse to donate. I did make the mistake of donating once, but I usually refuse to answer the multiple calls. The latest call came in while I was on another call, and I made the mistake of flashing to take the call. They do call ad infinitum and, at least, they do identify themselves so you can know who you are refusing to answer.
Another solicitation - "Breast Cancer Prevention Fund" -- not rated by BBB because they will not give them pertinent information. As with similar solicitations of this type, they keep most of the donations for themselves.