This is a good example of why there should always be an alternative way to access services besides a website or app. There's always an assumption that a computer or a phone is available to do things as simple as making an appointment right through to something as complex as planning and buying a vacation, which is fine up until it's not an option any more. In the past 20 years more and more companies have started to fail at this. It's practically impossible to do anything more complex than buying something from a local shop without access to tech now.