Called, I didn't answer

Incoming call, called once, I didn't answer. No message was left.

Missed a call from this number. No message left.

Scam call.

Claiming to be calling about your "tax refund" - says there is a problem with their scanning your tax forms and they need to "verify" your info.

Trolling for ID theft info.

On call back the number just gives you a fast busy signal.  

this pos called wanting tax info .this pos couldn't speak English. told him to eat a burger and get the info from his ancestor