I understand a students frustration at having to deal with a variety of teaching styles. Everyone is different and this is often because the schools don't have a real plan on what they want us to teach the students. Being a 'native speaker' alone shouldn't qualify us as an English teacher. Most successful ESL teachers know this and respect others who share their qualifications (Masters degrees, TEFL/TEOFL degrees, Education B.A.'s, etc). However, many schools seek American, English, Australian, Canadian, etc. teachers because language is connected to our culture. We use idioms, slang, poetic devices, cultural references and the like on a consistant basis when we communicate fluently. If you are only seeking written English or grammar then by all means, any nationality would be fine at teaching you this. But for pronunciation, phonics, IELTS, etc. a native speaker is best. The fact that you are confusing 'fat' and 'ugly' with qualifications and ability is disturbing. When you learn English from a foreigner it is important to also understand our expectations. I too do not let my students talk a lot in class, or use their phones. All non-English work is put away. And sometimes my students don't want to do what I have planned. If you are learning to be an English teacher then you should know these things by now and have some respect for someone in your future profession.