"You get what you pay for" only works when a dollar has the same value everywhere. Since this isn't the case in the US by itself when talking about land and cost of living, we can throw that out the window when it comes to labor.

The failure is in the transition, you are right. But it may not just be the language barrier. If a company assumes that scripts are equivilent to training, they are wrong. Employees need a little hand-holding to get into the groove of things and recognize when something subtle is wrong. Looks to me like that is the case here.