Dodgy power seller "a1canvas" : eBay Guides

Dear readers. this is to warn people of a dodgy ebay seller that has ripped me off ! He is a1canvas and he sells reproduct parts for classic american cars. I am a UK buyer and he resides in the USA. I spent $ 780 (and paid the moment I hit the "Buy it Now's") with this seller and he has done nothing but. mess me about from the start. He didnt post the goods for 9 weeks after payment. I clicked on a buy it now button by mistake and ordered a second rooflining that I obviousley didnt need, then I apologised and spent some more money in a bid to pasify him. Then he refused to send the goods that I had ordered and payed for and he still has my goods and my money and wont ship until I pay for the second roof lining. I have been on ebay and never recieved negative feedback until now and I am so disgusted with this sellers actions.