Google India / Tez — bus ticket booking related

Address:

Mayur vihar, Bikaner, Rajasthan, 334001

On 6 november 2019, i have booked a ticket from bikaner to jaipur and paid the requisite amount and a confirmation email came to verify that my ticket is booked, but there was not the seat no. And later on ticket is cancelled and the amount has not yet came. Without my notice the ticket get cancelled and i left a important bus.
This is a serious issue and i want to complain. And want my right.. I have all proofs.