Bests & Worsts Reviews from Amazon

I ordered the Earlyears Busy Ball Drop and received an "Earlyears" Busy Ball Drop. The toy I received had only four tiers, instead of the advertised five. The balls were two lightweight, hollow, cheap plastic balls with nothing inside them, not the three "heavy duty" acrylic balls with spiral design and rattles inside. The printed box was clearly labeled "Playgo Toys", and the original UPC bar code had been covered up with another bar code sticker with "Earlyears Busy Ball Drop" printed on it. The toy wasn't worth $10, let alone the $19.99 I paid for it, and has already been returned for a refund. I am disappointed to have received an inferior knockoff, and also surprised, since the order was fulfilled by Amazon. Amazon, what happened? (Updated: Seller was Kandycares)