Neetabus.in / Neeta Tours & Travels — worst experience at neeta volvo

I had booked my online ticket for rajkot location on dated 5 aug and pnr no is 62798972 seat: 14. Once bus reached at destination i come to knw that 14 number seat is not found in entire bus. Also i seated in last seat which is not preferred location at the time of booking the ticket. It was really worst experience. If preferred seat is not available then why u guys are giving selection to the customer during online tickets?