This number calls due to information filled out online (I DID fill out info and gave them my cell number). They get your number because you are required to give a CELL number when filling out the information. If you call this number back, you can press 9 and enter your phone number to be removed from the calling list.
Just got the same call at 9 am on the dot about some online survey i recently submitted. I said i hadn't done any surveys, then he says well the survey was about potential jobs in my area. I then said I'm not looking for any potential jobs as I'm employed and he proceeded to say that he could help me find a job in my area then at that point I just hung up.