Air India — not receipt of baggage

Address:

Mumbai City, Maharashtra, 400005

Sir,
I want to inform regarding service and responsibilities showing air india staff.
I travelled from visakhapatnam to mumbai by ai 651 on 11 may 19 and by ai 681 from mumbai to kochi. At arrival at kochi i not received my baggage then after consulting air india staff at kochi i lodge complaint my file no. Cok ai 42073.
Since today morning i called so many time but nobody is responding to resolve the issue. Mumbai air port staff saying your luggage forwarding message not received from visakhapatnam and kochi is saying i lodge complaint i m not responsible you contact mumbai. Finally i m getting harrashed, everywhere customer is suffering but air india not taking any responsibility. Customers care which is 24x7 service saying today is sunday because of that staff is not available in office. Can you agreee with this if yes than where is customer stand.
Regards,