Their company values are skewed, at best. The employees who are scamming customers and getting away with it are rewarded, while those who work hard and are honest about the products with the customers are scolded for not hitting sales goals.
The concept of "deacts" are outrageous - it was a constant struggle between selling a phone to make a dollar, or not selling a phone because of a deact risk (and the amount of money that would disappear from my paycheck because of it).
We never had a set schedule - it would be set for one month at a time, and then change completely for the next month. This was probably the least of my problems - the worst part was driving over an hour to work a shift at a store, when I had a store within twenty minutes of my home. We were constantly switching between stores, which also made it difficult to build a steady customer base.
The commission structure pitted me against my conscience every day. The cheaper (worse) a phone was, the more money you made on it. You could sell a cheap phone for a lot of money and really take advantage of the customer -- but in doing that, you run the risk of the customer finding out they were cheated. If you sold a halfway decent phone, the commission was often next to nothing, especially when split between your coworkers on shift.
I'm sure that I could continue to list all the reasons why I disagree with csoki's values at its core. But in short, if you are an excellent persuader, content being dishonest with most of your customers about the quality of the device you are selling, and willing to work a ridiculous amount of hours to make a living wage, then, yes, this job is for you.