Buyer bought two batteries. Claimed both are defective. Not willing to return the items. We sent out two replacement for free. Buyer opened A-to-z claim. Not willing to return any batteries. Kept all the batteries and filed a claim.
If they didnt return the items, then its a bullshit claim. They wanted to see if they could steal the product from you. If Amazon wont help then file legal charges against him. Contact the courier, give them your documentation and at least they will place the asshole's address on file as a scam address.