The item I listed had numerous bids & sold for double what I was expecting. The problem is that when I was setting up the auction, I though that I blocked bidders w/0 feedbacks so I did not list on the auction itself that "I do not accept bids from buyers w/zero feedbacks. " The person who won the item just signed up for the account 2 days before winning the auction & they have 0 feedbacks I contacted ebay & they told me that there is no feature to block bidders with zero feedbacks & that I must have mistakenly thought I was doing so when I blocked bidders w/ -1 or more feedbacks. I was also told that I am "obligated" to sell to this person. Is there anything I can do? TIA