Qatar Airways — Delayed / Missing baggage

I traveled from Chicago to Kolkatta via Doha on July 2nd. However my checking baggage didnot arrive when I reached Kolkatta. The staff at the airport filed a PIR and mentioned they would deliver the baggage within 24-48 hour. It has been more than 5 days and no update yet.

The lady provided a contact number[protected] and email to check the status in case I dont hear back.
Have tried reaching them but no response.

Have important essentials in the baggage and is impacting my stay. Terrible customer communication and baggage handling from Qatar.

Kindly suggest necessary actions.