still showing when sold-sold as four chairs and showing 3 left

Anne, that sounds like you have entered a qty when setting up the auction so people could choose 1,2,3,4 chairs, where you may have wanted to sell 4 in one lot, in which case you would set qty to 1 ie 1 lot of 4 chairs. You can't change it now, but maybe the buyer that bought 1 actually wants 4? I would ask them.

yes they want 4 as advertised for $ 400 and i am worried some one will come long and press buy now-so not savvy with all this.please advise or shall i just with draw listing-we have arranged pick uo

Yes, best to withdraw the listing in case someone else buys, which could become difficult for you.