If you click Refund after receiving 12, whether to return Tenpay depends on whether parents trust the seller.
If you are worried about being cheated and distrust, you can apply for a refund before confirming the receipt. After receiving 2 items, you can click Refund in the transaction and write down the corresponding amount to get a refund.
In fact, what I have never understood is why I have to pay when I see that the order is filled with 12 pieces. If you check so many pieces with the money you know, you can order them again without paying.