While booking I had selected seat no. 25A, but during web check in they changed it. Upon calling helpline, Air India staff said they have made window and isle tickets chargeable from 1st April. However I had booked the tickets very much prior to their rules getting implemented. Then they said I can book my choice of seat 4 hours prior to the departure which will be not chargeble. But when I called them at 2 am they said it is still chargeable. I had fracture in my left leg 7 months back and still had a pain hence I wanted left side window seat. After much request at airport, they gave me 25 A without any charge. Also I did not do a web check-in because of change of seat but their system showed I had web checked in . In other airlines, there are some seats which are totally free, be it window or isle. But Air India said their all window and isle are chargeable. Staff was good, other facilities also good. First time Air India flight experioence was good except the seat experience.