A retailer charges one card, but lists another; what should the customer do?

Recently, I bought some tea online. At the retailer’s online checkout, I entered my card details and let it save, but didn’t complete the transaction. A bit later, I remembered that this retailer had PayPal for checkout (personal preference). I went back and completed the transaction using my PayPal account. However, my PayPal account had a different card linked to it than the card I had entered earlier. When my tea arrived, the retailer included a receipt, including the last four digits of the card used. The last four digits of the card were the ones that I had typed earlier, not those of the card that I had linked in PayPal. However, when I checked the transactions, the card linked to PayPal was charged, but not the card they had listed on the receipt (as I assumed). Should I do anything at this point? If they have my money, does it matter to communicate and say that a different card was listed than the card that got charged?