It's the FOP scammers with yet another new number.  I have close to 50 different numbers these lowlifes have used to try and scam me out of my credit card info.  I have family members who are police officers and they're not aware of any legitimate FOP locals that use this tactic.  Don't ever donate anything over the phone.  If you think it's legit, ask them to mail you something and you'll consider sending them a check.