I am considering looking for a new job after 6 months because my job is not a good match?

My new job is tolerable, but not what I expected. I am customer service/sales for my employer. About 80% of the calls I take are from lower income people calling in because they angry about something, I am then expected to try to sell to them. My co workers are lazy, have bad attitudes and try to blame each other all the time. There are also a few people in the office who are picked on as if it was middle school.( I am not one of them) My sales numbers are very bad and I am afriad I may lose my job eventually. The company is also involved in some unethical practices, tricking people into buying things, etc. there is a lot of turnover also. I will add that it has its advantages- the pay and hours are great and the commute is very short. I will probably stay and keep trying. But If I lose my job, what reason should I give for leaving?