Madam, I can understand your problem. It is possible for somebody to lose their life also if they are struck in traffic while they are going to hospital in an ambulance. In that case, they can sue the traffic police if they are not helped to move without delay. Ambulance, fire extinguishers are such emergency services which are expected to be allowed free and fast passage through traffic.
But in the facts you have mentioned, it is seen that you were held up in traffic as a common man without any emergency. There may be many more people around you who might have to reach a place within specified time. Traffic congestion is so common in metros these days and even though police put up lot of efforts, it is not possible for them to help congestion during peak hours due to poor infrastructure.
In such situations, it is advised that passengers have to leave their home earlier so as to reach their destination in time. I do not think traffic police can be held responsible in this situation.