Hi andhal.. Can't imagine how you managed to accomplish that and nothing is showing in your purchase history. Are the items in your myebay purchase history.
All you can do is either pay or contact seller from listing and explain. Ask if they will file cancels for 7. You accept when eBay asks. Seller is not obligated to file but rather can open an unpaid dispute. Ebay assigns a strike to your account. 2 strikes from different sellers and your buying is restricted for a year.
Be sure before hitting the commit button.