Pros
They are always hiring, so it's pretty easy to get in the door. I enjoyed the variety of people and conversations I had had throughout the work day. You could make bonus money based on your ability to upsell and collect on delinquent accounts. It offers part-time positions above minimum wage, which can be hard to find. It also offers various start/end times.
Cons
You are expected to be accepting calls at all times. If you put your phone in not-ready for any reason, even to go to the bathroom, you were timed to the second. It was very lonely because you got in trouble if you stopped taking calls to have even a brief conversation with a coworker. Expected to memorize massive amounts of information that was unrealistic, especially at that pay level. If you are full time salary - they will work you to death with no overtime.