Air India — unreceived baggage

I travelled via ai 681 today from mumbai to cochin. The flight had been delayed by half an hour. I reached kochi at around 7:50 pm. I along with a number of other passengers waited for our baggage for more than two hours in vain. We couldn't find or werent even informed about why the delay was taking place. Finally at around 10:00 pm we come to know that the baggage is still at mumbai airport. I need to be at tvm by tomorrow evening. What am i supposed to do? There are others whose daily medicines are still in the baggage to arrive. How are they supposed to find a medical store after 10 at night. Please take it in its seriousness and take action against the negligence of the concerned.