I too have had similar experience. I always make an effort to offer good advice when asked.. When the little ingratiates don’t acknowledge I make a mental note to ignore them when they next come asking.
Back when I was but a brat me Mum would rap me very hard on the knuckles with a convenient weapon if I did not say the required “please” and “thank you” at the dinner table. But knuckle rapping now is against the law.
I find Asian and South American pilots generally very polite. Rudeness and ignorant behaviour seems to be a Western thing.
Mahatir was right about us becoming the poor white trash of Asia.