Air India — baggage torn and customer care non cooperating

Address:

Mumbai City, Maharashtra

My baggage was cut open while on flight from Delhi to Mumbai.
When I complained they depreciated the value of my bag and offered me Rs3000 as compensation.
I can neither get a new bag of same quality nor get my bag fixed at that cost.
They are telling me to give purchase reciept which I don't have now.

They sent someone home to check if the bag can be fixed but it was cut in a bad shame and cannot be repaired.

This is very shameful act and I feel very insecure keeping my valuables or anything for that matter in the bags.

Also air india has no right to depreciate the value of my bags and tell me to accept some compensation.
I could have used my bags for 5 more years if it wasn't damaged.

This isn't the first time with my bad experience with Air India. They have even cancelled my tickets due to their mistake in system once .
Worst airline and very bad customer support