Delhivery — Fraud committed by Delhivery

I am a seller on Meesho dealing in men's garments. Delhivery is one of the courier partners that picks the product from my address and delivers it to the customer. Sometimes the customers cancels the product even before the product reaches the customer, thus creating a courier return. The delhivery executives do a fraud and they take out the product and insert garbage into the packet before returning to me. This is leading to a loss for me.