Seller dissatisfied with sale price; withholding shipment; will cancel stating item lost when not.

[wormandcandy]

Seller will not respond to emails; will not ship item and will claim item lost to cancel sale.  How to contact eBay directly for assistance?  If sale is cancelled, will not be able to leave negative feedback.  Seller is will actually

untruthful in stating item lost.  Seller confirmed item's availability earlier.

[wooden_flower]

The ‘item lost or damaged’ is a catch all for all seller cancelled transactions.  The seller gets a defect - bad mark on his account for cancelling, so there is nothing to report.