Ibibo Group / Goibibo — Red Bus not providing GST invoice

Events:

Booked A bus ticket from red bus and paid them through UPI on 17 nov 2021.
INR: 1805
Ticket No: TQCD15866592
PNR No:[protected]

On ticket their were nothing mentioned about any taxation details.
I raised a concern to get GST invoice from red bus on 29 nov 2021

RedBus representative not leastning my concern and telling me to contact bus operator.
Also I contacted bus operator but he is saying to contact red bus.
The both orange travels and red bus is doing frauds and I think they do not pay taxes to govrnment that's why these companies are treating costumers like this
Kindly help me out.