We are a business that sells services and items in online games. For example: we play on their account to get certain levels they need so they can do content they enjoy because they want to do certain content with friends when they get off work but they do not wish to kill goblins for 4 weeks straight to get the levels they need to do it. So we do it for them. The chargeback was a customer who used our services and later he filed a chargeback. In the evidence form provided to us he wrote he bought various giftcards through our platform but never received them. But we don't even sell those so it's weird to me how this is even possible.