R. S. Yadav Travels — confirmed seat not given by your staff

I booked online ticket from delhi to gorakhpur but i was telled to the bus contacter my seat is confirm then he telled driver was saying there was no seat booked by u i have showned my ticket then i have sit in the last seat my money was waste vry vry bad bus contacter.. I have already paid a extra money of s3, your conductor sale a ticket to other passenger. Kindly look into the matter and refund my money other wise i am file the complain against you.