They call 2 or 3 times a day. I say hello and they hang up. I'm sick of the nuisance. I can only block so many numbers with my landline, and it's full with scam calls right now.
After a few calls I checked them out on charitynavigator.org and they were not rated; usually that's a bad sign. Before you donate to anyone, check them out there. Once you sign up (free) you can see their latest IRS reports showing the amount they actually use for "programs" (e.g., the veterans). I'm starting to refuse to donate to organizations who use telemarketers; it's the only way I can think of to send a message that such intrusive solicitations are not effective.