Jet Airways — the cancellation of 2 flight and no one answer me in email and can not call to hk call center at all!

I have 2 flight (9w 0077, 9w0259) have been cancelled, they are all transfer flight so i have to finger out why and what is the flight change next and what they do with that. They just send a email told that is cancel without a reason?! As a 25 years airline as they said they are the biggest at india that i was trust them. That really make me feel bad for the india company from now on...
There have less than one month to the trip and at less let me know what is next i need to arrange it. How can a airline company have cancelled the flight (Each one from the go and return) and no option and help. No one can help.