India Post — My valuable articles were stolen from parcel

I should get 300 peices of articles from ludhiana to andhra Pradesh worth 100000rs when i recieved and open i just got only 60 peices of articles the reaming articles were stolen somwhere by the india post staff which is worth of 80000rs, the duration is from 25-5-22 and received on 31-6-22 its a serious issue which will lead many people lives. Please solve as soon as possible. I can give my tracking id or complaint id also