As the previous poster inferred, the problem may not be your age or hours or race. Its the area where you gained your experience and licences.
The are Indians / South Asians (lets be honest most westerners bunch all South Asians together - Indians, Pakistanis, etc) flying in western airlines, but most western outfits I have been involved with are shy about those who are born, raised and aviation trained Indians (or anyone from that part of the world.).
The reason may be western expats now in these "home" airlines have seen first hand the corruption and variance of flight standards and simply put it in the "too hard basket".
Without having flown with your actual operator how is a major airline to judge which sort of South Asian carrier you come from? Or how you got to where you are?
It may not be fair, but sometimes thats life!
But chin up - keep hammering CX and good things may happen. Have you though of getting some ID travel and visiting them? Something to attract attention to your file from the thousands of others on the list...
Good luck.
