Nerdused Store Scammer

This user scammed me. I initially bought some Office and Windows keys from him, and everything was fine. Then he made me a good offer for Xbox Game Pass and gave me some codes that didn't work and used ones. He told me he would fix it, but a day went by and nothing happened. Then I asked for a refund because my clients were requesting the codes or the money, and he said yes, but he didn't fix anything.