Received a call from this number did not answer but called it back. He said his name is mark and it's a charity donation for police force all over for better training opportunities and all... they said they will send an envelope in mail and take donation from 25-100plus. Don't know if it's legit or not though.
It's a legitimate contribution to the caller himself. Could be and probably is some dude sitting in the basement using hero charities to cheat receivers. Tell 'Mark', if you must deal with him, to keep his envelope. Your money will fill the caller's pockets more than the police force.