UG318 different size blocks in carton - unsellable

UG318-VH Mega Tumble Tower different size blocks in carton - unsellable

Please advise how it is possible that such a huge difference is sizes of blocks is not noticed in the plant

We are lucky to see this in the warehouse, and not the customer. This set cost 155 pounds.

 Also: blocks are damaged as they glue to the bag. So bag and blocks are damaged.

 We cannot sell this. We need replacement (+15% for transport)