redBus customer support or helpline number is 099456 00000.
Passenger receives bus and driver number from the bus operator 1 hour prior to the journey.
Once the bus operator updates the bus and driver details you will receive your boarding details through SMS.
If you want to cancel your ticket follow the link : redBus Ticket Cancel
redBus do not have the option to modify the ticket details post booking confirmation as per the policy.
But this post can help you to change your boarding point.
You can track your bus with yourbustracking link, check this article on redBus Live Tracking.
You can easily check your luggage policy on your redBus ticket, and.
You can follow this post: book a ticket on redBus App & Website to know how to book a ticket.