I suppose it must have been in the late seventies, in an actual red call box as opposed to one of those payphones just hanging on the wall. Back then I would sometimes phone my mum saying I needed rescuing and was wanting a lift home. I never had a mobile phone until around 2004, so I am trying to remember what I did during those intervening years, just used the phone at work all the time or in whatever hotel I was staying in. Never had anyone to call! If I was away, my wife would always be with me, and she is the only person I would need to call.