I worked for two cold calling companies which the job centre forced me to do, ok it was a job but my god did I hate it. Indeed you do have a list of numbers to ring and you do your best sales pitch, but you evidently piss off the people you are calling. I lasted a week in both jobs because I never made enough sales, I felt god awful that I was hounding these people and my heart just wasn't in it. On the last job I agreed with someone on the phone who said what I was doing should be illegal, I said this isn't me at all. Obviously calls were recorded and I was let go, I didnt even care! I think in that type of job you have to not care to succeed but I did care and felt really uneasy harrassing these poor people. Now shoes on the other foot when I get these sorts of calls I make the point that im not interested and tell them to strike me off their list, sometimes they do sometimes they dont.