Lady with very thick accent telling me she wanted me to participate in an environmental survey.  I was suspicious of the repeated emphasis that this call was not to sell me anything, so I hung up.

Caller ID said " Name not found" .  Played the "Intel sound", like in their commercials, three times and then disconnected.  Huh?

Company conducting surveys about a variety of things.  Did not try and sell me anything.  Asked about differences between my IT needs last year and this year.

This company called, and the operator was not understandable, so I hung up. The operator called back three times. I finally agreed to take the survey, but after I became uncomfortable with the questions and requested that we end the call, the operator called back 2 more times. He refused to comply with my requests to end the call.

lady with foreign accent wanted to update accounting records.  I kept asking her questions about the company she was with and what company she was wanting to update and she hung up on me.