why the seller didn't reply my message?

[8336eugeniol]

i bought catalytic converter on 1-stop22 but my problem that i bought it is different than the picture it does not fit on my car so i return it them but it didn't reply on me .  

[karl*katz]

What to do if you don't receive an item or it doesn't match the seller's description

http://pages.ebay.ca/help/buy/item-not-received.html