They called me 4 times in one hour yesterday. That is really annoying. I called back and there was an automated message saying "You have been contacted for marketing research or a sales call." Then it hangs up. Is there anyway i can stop this?

These calls have been made repeatedly in the evening and I'd like to stop them

Three calls from this number.  They are unwanted calls.  No information left.  Please stop calling now.

They called us 3 times on  9 July 2014,
                       3 times on 11 July 2014,
                       4 times on 12 July 2014.
They must be stopped!  Can anyone identify this company?