This is Heritage Telemaketing. They will bother you for a plethora of differnt charities. They're legit, but its better to give direct to the organization.
Bothered me for months last year and now it is starting again. They call incessantly three-to-five times daily. Have caller ID so do not answer.
They are an absolute pest!
Said they were soliciting donations for some police cause. I asked the percentage of money that went to the cause versus the amount for administration costs. Caller promptly hung up on me. If you are interested in contributing to charity make sure only a reasonable amount goes to admin costs and the bulk is given to charity. If the caller balks, don't contribute.