Air India Express — tv set - damaged

My brother was travelling from dubai to mumbai air port. He was carrying 43 inch tv set lg which was damaged by air india baggage employee. Please note that my tv set was packed in non-breakable box. We tried to reach out air india officers through email as well as phone numbers given by them. However, we are not getting any response from them. Please investigate it at the earliest and arrange our compensate for same.

Please find attached an authority letter of on-site officer as well as other details related to tv set for your reference.