I got a call from this number they don't say who they are and the number on caller ID comes up local area .  I need more info not calling back if I don't know why ?

Just got a call on my cell phone and work phone from this number although on my cell phone it comes up in my area code.  The lady left a message that she is Ms. Mason from TRS and that she needs to comfirm my place of employment.  When I called the number back it just played music and then her voicemail picked up.  Pissed because they are calling my job!!!!

i got a call from this number today but the number was 919 879 3000 on the caller id but the lady leaving the message was requesting a callback @ 855 237 5954 and stated that it is imperative that i speak with ms.mason.who knows??