Update:
Thank God my windows r all clean now, i went to the car-glass polishing people who told me they will use "glasso" polish which made me think the glass will loose the smoothness and shine as tht polish is meant for the body.
I decided to go to a glass cleaning company who take contracts of cleaning tall glass buildings and they used some thick viscous liquid tht they didnt tell me but it worked wonders
It smelt like tht "salt wala acid" we get for washing the ceramic in the washrooms and kitchen but whatever, they charged me 500.
Moral: Always use vehicle specific products on ur car from reputed brands and never try any home cleaning agents on ur car other than shampoo tht "in my opinion" is fine as it has no fine particles tht would harm much, moreover when u leave ur car at service stations, they usually use washing detergent (surf) unless u give them 2 sachets of shampoo so be careful.However surf with little concentrated chlorine works wonders on the fabrics
Thanks to pakwheels and all you brothers who tried to help.