Need recommendation Muaythai Gym at Hatyai/Songkhla, thank you

Anyone know of a Muay Thai school that'll do a six months course and Visa? I meant to say in Chiang Mai.

So, I am currently in Thailand, I fall under the category of the automatic visa extension that occurred months ago, I don't know how to obtain an Education Visa - I am seeking more information on the process of doing this (nothing I read under the Education Visa tab was helpful for what I am asking) - Also, is the only right for an Education visa for learning Thai or are there other school/training options?