Anything broken I find when unpacking I stop and photograph it. The less unwrapped the better.
I send them to the suplier both to get a replacement but also to help them make a claim against the carrier.
The worst I ever had was a laser power supply, not an insubstantial bit of metal, reduced to a quarter of its thickness. and full of airfield mud.
The carrier (DHL) said a lorry had run over it, but without a complaint from a recipient their policy is to delivered it.
The funny thing was that Customs had subsequently inspected it wrapped it, mud and all, and charged duty on it.
I got it replaced FOC. After some trouble customs waived the duty on the second unit when I threatend to send a photo of what they had done to an appropriate government bureaucracy hating tabloid newspaper.