Yup happened to me also. feebay sucks big time. I had over 750 positives 100% and some stupid witch bought an item I stated as being used then had the cheek to say something was missing (there wasn't) and demanded a discount.
I was on holiday so didn't know any of this till I came back and missed the chance to add my pennorth worth. She had the item, had a refund and also had the free gift I had also sent along with the item. I am totally disillusioned with ebay even though the outcome was that neither myself or the buyer was to be found at fault meant didly squat to my rating or feedback as I was still penalised and am now suspended because of it. First offence and I'm out!
I was not a business just flogging off a few of my craft items I no longer used or needed and she was a greedy mare who took advantage of ebays brilliant for buyers crap for sellers policies...
ebid all the way from now on