The next time you are interested in researching an English teacher and school it would be best to be honest with them.  Especially when they are willing to work with your budget and prepare a special lesson that is just for you.  If you make an appointment with a teacher even for a trial class the ethical and polite thing to do is let them know if you are not interested anymore.  Just removing them from your contacts is quite rude and shows me that you were fishing with the least expensive lesson not the teach with the highest qualifications.