You can cancel your bus tickets on VOWBUS website or mobile App from My journeys
section. Select the ticket you wish to cancel and you will see a Cancel button at the bottom of the ticket. Click on it to select seats for cancellation and view cancellation charges applicable. You can then acknowledge it to proceed with Cancellation. Depending on the operator there are seperate cancellation policy and you may not be allowed to cancel ticket before certain hours from Departure time.
To know more on operator specific cancellation time limits and charges, click here Ticket cancellation policy