received 3 calls but no message

in the last week i've received over 6 calls from this number and I've called back and its not a reachable number

No message left.  Called back and it said it wasn't a valid number.

I ignored 2 calls picked up the third but did not say anything.  A women asked for me by name and hung up with no response.  I am a former debt collector however I am not in debt so this is more then likely a telamarketer. Do your selves a favor and pick up next time and wait for a real person yo ask your name tell themunder TSR (telamarketer sales rule) they are calling a cell phone and FTC regulations require they put it on the DNC (do not call) list also if you can try and get the company name to report them if they call again

Calls twice a day leaving no message.