StubHub scamming me?

I’ll make this as brief as possible/tldr; Sold a pair of tickets to a soccer game in December 2025. Fast forward a couple weeks and still didn’t get paid so I called stub hub and they said the buyer complained that the tickets sold to him (away supporters section) has people in his assigned seats, and he had to stand elsewhere the entire match. The tickets did not state that so I didn’t note GA section when I listed them.

A couple weeks go by and I get an email from stub hub asking for proof of delivery to the buyer because the buyer was denied entry. Well, that’s not what StubHub told me the issue was previously… I uploaded proof and god knows how long it’ll take before they get back to me. On top of that, they’re apparently going to charge my credit card for the ticket amount due to “buyer being denied entry”. Anyone go through this before? What’s the best way to resolve this and get PAID?