Ugh I hate it when that happens. Raise a claim against the seller if there are any visible problems with the packaging. eBay will sort it. It's usually my local Hermes driver that fucks up my stuff:
In his defense, he may not have thrown it. He could have reached over the top and dropped it.
Perhaps you need to get a mattress or trampoline to put under the gate when you're expecting deliveries.
In seriousness, that stinks.
I hope the items weren't terribly damaged.
-Pat