Chatted with amazon. They offered either to refund the order or if I want the rest of the cups. I obviously chose the cups. This is the response I got from the rep for now:
"I have successfully contacted the seller stating that you have not received your complete order and you are looking to get the remaining items instead of refund.
Seller will directly contact you through email and will let you know that by when he is about to deliver you the remaining items which you are missing from this order.
, in case the seller will need any further detail to process the shipment of the missing items, he will let you know through email only. The seller will get back to you shortly in getting this issue resolved. "
Lets see.