Vistara Airlines — delayed flight uk 834

I had a flight from portblair to chennai on UK834 on 15th july 2018 which was cancelled after a delay declation of 1 hour due to technical problems. Though vistara provided accomodation until next day for the alternative flight the delay created forced us to miss our connecting flight from chennai to bangalore with spice jet resulting in an additional delay on another day.
Airlines staff instead of providing alternatives refused to assist us with connecting flights and also did not provide timely information. Apart from financial loses of 15 thousand at the very least the mental and physical strain caused by thee airlines is very diappointing