What should I do if my entry into Thailand was denied despite having a visa?

DTV_BegPecker You're probably right, I don't know and don't want to say something, anyway they all have your historial on their compuiter When you pass the emigration control, they know everything Al Ready. It must be quite rare that he refuses to admit a visa holder, well I have never heard his in the 40 years that I come and live in Thailand, that he refuses people who have an entry visa it is already more frequent or because they have no money on them, No tiket back, or because in the past they had overstay, ect.. But it's my experience, so after that I don't know 👌🙏

DTV_BegPecker Plus it seems to be that the MFA does not have access to your full immigration record. There may be things there that preclude your entry even with any type of visa.

@Marcopolo *****

Ok, your response isn’t easy to understand, but Greg is correct. The Ministry of Foreign Affairs is a different government agency than the Bureau of Immigration and they are not even closely within the same chain of command. The embassy reviews your application and determines if you meet the requirements of the visa (have the money, the course, etc.), but immigration has final deciding power on who they let into the country. A more clear cut example, a Thai embassy can issue you an education visa to study Thai language, but immigration has a history of testing out your Thai language skills when entering to see if you are actually doing what you said you would do with the visa. There are many cases where those who clearly couldn’t speak any Thai but where supposed to be here studying Thai (that is the visa the embassy qualified them for) get turned away. It is less likely to happen compared to visa exempt but it is always a possibility