I had a Robot Kingdom error. Quite coincidentally, this was 2 days after talking with Griffin about his current error and we were twining about how poor their post-sales support was for anything ambiguous. Luckily, in the case of my error, there was no ambiguity.

I ordered 2ea. of Animated Rodimus & Ironhide. I only received one of each.

So, I replied to the original email receipt for the order attached with pics of the opened box (so they could clearly see only 2 deluxes could fit in it) as well as a pic of the packing slip, which incorrectly said 1 of each.

I got a reply in 12 hours saying they'd ship out the rest of the order today.

My Conclusion:

Incomplete/incorrect orders: No problem, quick response
Damaged/defencted goods: Good luck