eBay

buyer wants a refund on a digital HD code - how do I know he didn't use and now wants a refund

I entered a duplicate item and I want to remove it.  How do I do that?

How do I relist unsold items that are not listed for the past 90 days?

A buyer paid with pay pal for an item but I had to refund their money through pay pal because I dropped the item and it broke. It is still coming up as paid ship. How do I remove this from the ship list?