The agencies in Thailand are an absolute blight upon the whole hiring teachers from overseas scheme of things. Thailand is turning into Japan in terms of the cowboys operating to maximise profit. Many Japanese kids have been through the whole school system with ALTs in the classroom but have no ability to speak the language.
Thailand seems pretty much the same - trashy operators selling karaoke boxes and scripted trash as communicative education. Oooops-almost 'named names' there.