Hi,
My parents are travelling to Belgium from India on 21 sept. I have indicated the same while visa application. but to my surprise, i got visa starting from 22 sept. I am totally confused what to do now?

My parents will reach Brussels 21 Sept 14:30 (local time).
Please suggest some solution. Tickets cancellation fees is too high and i can't afford a cancellation and rebooking now.

Any help / suggestion is appreciated.