Also, I can add: All those people, Jessica, Olivia, Sean, James, John, Melissa, Linda and many more have Chinese accent. Now, I am not suggesting even for a moment that a person from non-English country should not run a business or should not write. I am only saying that people leave and go, and the next person who replaces him, takes his name and you don't know with whom you are dealing. Sometimes, it is like talking to people with amnesia, as they simply don't know what happened earlier, despite having the same names. It is all very confusing.
Getting the payment out of them is very very difficult. Please work for them only if you don't get a job anywhere else. Essay standard is nothing great either. You have to be very careful. The moment you get an email saying: "Sorry, billing company very busy. There will be delay in the payment this month" etc. you should stop writing till you get your salary.
Having said that, I also can add once again that they are not blatant cheats, just dodgers if they can get away with it and want to continue essay writing.
This is tough trade, pal!