Debt Collection Dispute - eBay siding with buyer on false claim

I've been trying to resolve this on my own but I'm stuck.

eBay siding with buyer on false claim. I've been dealing with this for about 5 weeks now and the situation isn't improving.

The amount being held/disputed is approximately $14,747. I have tried contacting customer support 9 times with no resolution.

Should I hire a lawyer for this or try to handle it myself?

I went through almost the exact same thing.

I ended up escalating to a supervisor/manager, which cost about $1-3 but saved me a lot more in the long run.