Air India - refusal of in-flight service and rude behaviour by flight attendant

I was traveling from Mumbai to Newark on July 10, 2018 Flight AI-191 .

Even after 8 hours after take off from Mumbai, no beverage and no food service was done. No Response to the flight attendant Request.

Finally when I went to the back of the Aircraft and requested beverage, a lady flight attendant rudely replied that they are about to begin food service and refused my request.

I travel frequently by Air-India and the service is not at all Consistent.

Entertainment system and Charging port do not work. Carpets are dirty.