http://pages.ebay.com.au/seller-non-performance-FAQ.html
Why was action taken against my eBay account for seller non-performance?
eBay took action on your account because you have a high level of buyer dissatisfaction. Buyer dissatisfaction may be caused by:
Item not received
Item significantly not as described
Item posted late or packaged poorly
Inadequate co妹妹unication with buyer throughout the transaction