Good Sam tried to screw me, ended up screwing themselves

Good to have records but credit card companies are in the habit of just responding.

In your case, canceling a charge if you challenge it...even without proof.

Then it's on the business to reassert it's claim. Probably the end of it but keep an eye on your statement as it could show back up because if they say it's legitimate, the credit card company puts it back on.

They don't seem to do any actual investigation of if the charge is legitimate, they just seem to respond to the most recent request.