Abhibus Services India — booking a nonexisting seat

Sir, i booked a bus (See pics below for details.)

I booked seat no. F.
Then when i got in bus i found that there was no such seat but there was a lower sleep in which i had to share with 4 other people! Some of them also had no seats who booked online!

Please check the real seat pattern of that bus!

I suffered much coz i could sleep that night for that long journey!
I want refund and nothing less😠😠😠😠