Accroding to your concern, there is a possibility that the payment machine may have encountered problems, which you are unable to use the application and and requiring cash payments. In such cases, our staff will have notices posted at the counters. However, we will shared your comments with the district manager and staff at MRT Phetchaburi (Exit2) store for their attention and investigation to make necessary improvements for future service. We would like to assure you that your feedback will be reviewed by the staff at this store, and appropriate steps will be considered to improve the customer experience. We do apologize for any inconvenience has occurred.