repeated missed call on mobile phone

I received a call to and he told me to leave a msg on his voicemail???!!  What line of business are you in?

Are you in real estate?  What do you think this call relates to?

Missed a call from this number - no voicemail or anything. Will update...

no answer,just recording.Says his name is Tom, leeave a message. That's it,so far.Will update if find anything else.