Coffee Talk King Fahd International Airport - Problems with employees

I like the place, everything is very tasty. And very good staff, pleasant and polite except one guy - Fahid (or Fahil) - the way he pronounced his name. He never answers “hello”/“good buy”, never reply. Also almost always when I come he says that it is cleaning, so I can not buy, like it happened now. But the thing is that it never happened with other staff guys