The parcel was sent by Yuantong, and the courier transferred it to Shentong privately, and the object was damaged. Who should I claim compensation from?

Shentong is rubbish. Don't call, don't send text messages, just throw the courier at the unmanned collection point. Why is your charge cheaper than other express delivery? Express delivery is so expensive that it is not delivered to your door. For two consecutive days, the signer himself is at home, or will you throw it at the collection point?