Air India — baggage misplaced

My baggage was missed by air india in the transit and they are not able to provide any information so far.
There is a baggage tag number and the customer care says they will not be able to search the baggage with those numbers.

This is totally irresponsible behaviors and the customer care is inefficient.
They are totally wasting the time and are so difficult to reach. I had called around 10-15 times so far and each one give different answers like the complaint number cant be tracked, the other says contact local airlines offices, other says 24hrs, another one says 48 hrs. Totally confused and worried.