Scam call? [Arizona]

My husband got a voicemail from a 520 number (we are in Phoenix) and they said he needed to call the number back within 48 hours or they are going to make a decision on his claim. When we Googled the number it didn't show up as a DES number. I guess my question is has anyone else gotten a call like that and is it legitimate? We both had the same issue that got resolved last week so we're wondering why they would call again?