@Nomin *******
I just went to TMT Visa Service Thailand in Phuket and they sorted it for me. I can't remember the school name think it was BKK language school in Patong. Very friendly teacher, learned loads of Thai.
Ps, I've lived with my Thai gf for 4 years now and she doesn't speak any English so it was totally worth doing the ed visa as I can now speak Thai. Recommend if your looking to stay long term as it opens up so many more doors and locations for you when you can communicate with locals