The buyer is asking refund. So, this buyer hired me for a game-level design project divided into two parts. No NDA was signed for it. I delivered the first phase and it was working completely fine on my side. Due to some technical reasons, I can't work on the second phase. I explained my valid reason to him. Now he is saying he wants a refund for the first phase too claiming that the project file is not working. I gave him a recording of the gameplay in that level too along with the project file of phase 1. He completed the delivery and gave nice feedback at that time. What should I do?
