it doesn bothers me but i just wonder when i turn around or they turn around i would make: what the hack is that: would brothers them to say thank you, kind of face!!!!
though i was told by my parents when i was young, if i was asked to bring water or even a book to one of them or asked to close the door. i wouldnt move until i hear shukran and if they took too long i would say: afwan any way
means, you welcome though.