Its an ad firm. Just tell them to put your number on a do not call list

.....caller calls and does not respond....

Now when answered it was a fax machine. I use my home number in joint with a fax. I'm guessing they heard it before now want to send fax's

It's somewhat a scam  A guy asking for shipping address and credit card # as he has something to send a package but don't want to say what's the package and from whom it came from.

Pnoned several times and I didn't answer. When I did answer, there was no one on the other end.

Someone from this number has called me 3 times today (Feb 19th).  I answer the call and no one answers me.  There is then a click.