Oscar, sorry to hear that! It can also be a little costly as unless you report it you still get charged your listing fee ansd sale fee but as you have already reported them this should be refunded. I sell a fair bit on Ebay and over the past few months I seem to have had a few strange responses and approaches regarding some listings. The value of mine are usually a few hundred dollars at most but lately there seems to be an increase in problems. Nevertheless, I am glad you reported it because it is very very strange indeed that you personally had such a high failure rate which would be much higher than the norm. Good luck with the investigation and I hope they get what is comming!