machine doesn’t work and not programmed like seller was supposed to do.. we can’t make them work

I am very satisfied with your coffee vending machine! I was impressed not only by the stylish appearance but also by the excellent performance of this machine. This quality and taste make me full of trust and satisfaction with this machine. It not only provides high quality coffee, but also brings convenience and fast service to people. I would love to recommend this machine to my friends and family and look forward to more collaborations in the future.