I missed the call and there wasn't a message.

got 2 calls in 2 days from this #.  no message left.

I was getting constant calls from this number with no message.  I just called the number back and was told it was some marketing/research company.  When I mentioned that I was on the "do not call" listen I was told that was for telemarketers...  He said that he would take my number off their list.

repeated calls morning and night (3 days), no message and no response when i answered the call.  When i called back they said they were a research company and they would take me off their list. more pleasant than most soul sucking telemarketing "research" companies.  hopefully they will stop disrupting peoples lives with their unwanted calls.

I got two phone calls from this number. I was not there to answer and they did not leave a message. When I called the number back there was no response.