As per my local precinct, the police do not call for solicitations. If anything, you may receive a little campaign request (I receive it from my local county PBA police organization) in the mail.

Any "charity" or any other type of caller that does not display their name and calls incessantly is not a reputable organization in my opinion and should be treated as scam.

I have now blocked this number since I have already received another  call from the same area code (which is also blocked).