This is a phony cancer charity. I got lots of calls from them last year. They keep changing their number to get around call filtering. They want to talk to you, even though they know you don't want to talk to them. They'll pester you until you give up, answer the phone, and tell them to stop. Once they get your ear, their staff of parolees will try to rope you in.
BTW, Debba, never call them back. That's one of their tricks. Why make a long distance call to someone you don't even know.
Called and didn't leave a message probably because it will cost them to do so by more time on the phone. Ridiculous. Way too many calls like this from other numbers as well. More so this year. Avoiding initial contact using an 800 number due to many on the Do not call list. A company name is suggested on another web site so if you google this number, you can see the company name under that other web site.