Not sure why a 575r would think a 505r would donate to their cause, so I'm going to echo that this a scam call. If you feel compelled to your firefighters, do it at a legitimate facility/pathway.
Caller ID displayed "New Mexico." Lived for a while in the 575 area code & didn't recognize the number (and I have caller ID for my contacts on my phone). Left no message. If they were legit they'd have a real caller ID and/or leave a message saying who they are. Blocked and reported to the do not call registry.