called and asked for John, we don't have a john who works here, or maybe she meant don, don is our fake name we give to telemarketers as in Don Keibals.  

called and asked for owner, would not leave a message with me. said theyd just call back.

Beth from someplace called  Universal Printing calling  for  "whoever takes care of all your Office printing supplies.........."
Just another telemarketeer  (of which there are a way lot more than Three...)

Caller ID says Denver CO - looking for the person who handles the printing supplies. Just left them holding until they hung up

They just called saying they were a new local California company selling ink and toner, Universal Printing. Wanted to speak to the person in charge of making decisions on ordering toner. Told her is was me. She wants to leave pricing on a small printer that gets used most often in the office. Well, I didn't have the information right in front of me and wasn't about to interrupt my work to go get it for her. She told me if I didn't know then she wanted to speak to someone who did. I told her I do all the ordering but I didn't have the information she wanted right in front of me. She got really pissy and said all she was trying to do was give me a quote. I just told her I didn't have the info again and said goodbye. I get this is her job, but don't get upset with people when they don't want to interrupt their day so that you can give them information they aren't interested in.