Failure of item/no return correspondence from seller

[svenmaffett2012]

Ordered part, part failed, seller won’t respond. Its been 3 weeks and I’ve sent 10 messages 

[inceptions]

Hi @svenmaffett2012 

If you received an item that is not as described or defective, you have up to 30 days to open a return using the option next to the transaction in your Purchase History. The seller will have 3 business days to provide a prepaid return shipping label or else refund. If he does neither, go back to the case on day 4 and use the option to ask eBay to step in. They will force the refund.