Hello 'pick-teri',
Ebay is full of 'glitches' these days, -- far more people than usual reporting odd problems. If you have tried deleting the items one-by-one and that fails, maybe try this:
Log out of ebay, go to your computer's cache and cookies (temporary internet files) and delete those. Then restart your computer and see if that clears out the dust, so-to-speak.
That's what I do when it shows me I have items in my cart but in fact it is empty. Sort of the reverse of your situation, I suppose.
If that is no help, maybe someone else around here will have a suggestion.