I feel ya Jo...
When I bought my 3/4" red Crosby shackles 2 yrs ago, I received a box pretty much destroyed and it had only 2 D-rings....no pins....and a USPS note that said it broke open in transit and they're sorry, blah blah blah. OK, well, where are those 2 red pins...they're NOT small, they're NOT light...where did they go??
I figured they must have some type of "lost & found"....right?....um.....no....
Luckily the vendor offered to send me 2 more complete 3/4" shackles....
....and your item is bigger, much heavier...and not easily replaced.
Good luck, sometimes it takes a while for them to route stray orphans back to the right Post Office....maybe it will show up....