How to contact eBay customer (buyer) support beyond the 60 days sale date?

I'm at my wit's end and I'm hoping my fellow redditors can help.

Back in March, I purchased a used (and expensive) leather bag off eBay from a seller in Canada; I'm in the US. I promptly paid and she shipped the next day. The package has been stuck in US Customs since March 18th. I've been in communication with the seller and she's opened a case through Canada Post with no results. I've done the same with USPS and had the same outcome; nothing, with the USPS basically throwing up their hands and blaming Customs.

The seller has suggested I initiate a case with eBay after speaking with Canadian eBay counterparts.

When searching the eBay help & support area of the website, I see I'm outside of the 21-day money-back guarantee period. And I'm also outside of the 60-day window to initiate a refund. I see no other way to contact support about this issue.

Can someone help guide me on where and how I can speak with a human, be it chat, email, or even phone?

Much appreciated.

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Update: I was able to raise a rep over with phone with eBay. Aside for opening a case against the seller and maybe getting eBay to refund my money that way, I'm out of luck. However, I did submit an INR case via PayPal.