Hi Betty, Our machines are all customized, and we customized and produced your machines according to your requirements. We produced the machines and sent them to you within a week. After you received the machines, we arranged for a video call to ask you how to operate them, but you never used them. We have contacted you without replying. We ensure that our machine is functioning properly without any issues. If you encounter any problems during use, please inform us promptly and we will definitely provide you with a solution in a timely manner. Sorry for the inconvenience caused, thank you for your feedback. We will continue to work hard to serve every customer well.