I am very aware that in Thailand, there is this thing called "losing faceSo - therefore - falangs who are thoughtful and considerate, try very hard to avoid making a Thai person lose face.We want to be culturally considerate In my culture, when having a conversation, to keep saying "what?" in a loud voice, shows poor manners. Much better to say "please repeat"
Or
"Sorry, I did not hear"
Or
"Beg your pardon