The problem isn't when you get banned, it is the fact that Google refuses to clearly communicate the reasons when there is real money at stake.
Google: "you delivered 30k worth of ads but I don't owe you anything because you broke the rules. I will not tell you which rules you broke or the URLs of the offending pages though, you will have to trust me"
Google: "you delivered 30k worth of ads but I don't owe you anything because you broke the rules. I will not tell you which rules you broke or the URLs of the offending pages though, you will have to trust me"