Veena World — total mismanagement and guests are taken for granted

We have booked tour for Amritsar, Dalhousie, Dharamshala for next week
i.e. April 9, 2018 to April 19, 2018.
At the time of booking we have told the flight timings as Indigo 6E-453
departure from Mumbai 10:45AM and arrival to Amritsar at 13:10PM. This
was direct flight and very much convenient for us. Looking this timings we had
booked this tour in January - 2018.
Now just 5 days before they are informing us that due to Airline problem now
the flight schedule has change. As per new timings we have to reach airport
on Sunday night at 10:30pm - Flight to Delhi will be at 00:15am - we have to
take halt at Delhi airport and connecting flight will be at 5:15am - reaching to
Amritsar in the morning at 6:25am.
Veena World has booked our tickets in November 2017 - This is clearly mention on the ticket and now they are saying that this changes has happen
now by airline.
We are totally aware that VEENA world is bluffing - they were well aware of this mess - Now we have checked and found that Airvistara and Spicejet flight are available for the same timings and even seats are available. These are also direct flight. - We are continuously contacting Veena World people but not getting any proper reply.
We are facing such problems at the Starting of our tour only - God knows what will happen in the next week during this Tour - As per have already paid
full amount VEENA world people are well aware that there is no other option for us than to accept what they have done.
It seems this is usual practice for this company as staff is very much cool on our complaints and they are just ignoring us or misguiding us.
This is our last tour with this company and surely will tell all our friends and relatives to avoid traveling with this THIRD class VEENA WORLD. This company is cheater and only collecting money from people - not giving any good service at all.