A man calling himself "Tim" called asking for my boss by his first name.  He would not leave a message, and hung up while I was mid-sentence.  I called back to ask the name of his company so I could inform my boss to be expecting his call.  He said his company was "National Merchant".  He then asked if my boss (he just used his first name) was the owner of the company.  (Typical telemarketer question, and why did he know his name if he didn't know who he was calling?)  Then he asked what our company did and what we made.  I told him I was uncomfortable giving out any more information.  He took a "attitude" with me and repeated his question with a "you better answer me, you insolent female" tone in his voice.  I told him I was not interested and hung up.  He called back four times in a row to harrass me immediately afterwards.