I have complained to couple of airlines about this. Nothing happened.
Chennai-bound @IndiGo6E flight crew speak English, Hindi and Punjabi.
Glad to be a polyglot, but I'm sure some would've appreciated a Tamil-speaking member. Noticed something similar a couple of months ago when I flew to Bengaluru. None of the officials spoke Kannada.
— Kartz (@Lord_Kartz) November 2, 2018