Air India - Seeking compensation due to physical suffering and mental agony

I had booked ticket from San Francisco to Delhi on **July **** for my Spouse (Ankita Kumari) and my child who is infant (Kashvi Kumari). The date of flight was **Oct****. It was booked more than * months in advance as we were told by the customer care executive that we have received confirmed seat with bassinet for our infant. The seats are first come and first serve as informed by Air India officials and therefore we booked our infant seat * months in advance with seat number **D. My spouse and infant checked-in at least * hours before the scheduled departure time. When my spouse checked-in, she received the boarding pass with a different seat number **C as shown in the boarding pass. The seat **C didn't have a bassinet attached to it and my spouse noticed it when she was already inside the airplane. She requested the airline staff but they were very rude. It resulted in a lot of physical suffering and mental agony for my infant child and my spouse. Any lady travelling alone with an infant should not have to go through such ordeal. I am seeking ****** rupees compensation for this suffering as it is grave negligence on behalf of people at the Air India counter who issue the boarding pass. Relevant documents are attached.