When I worked for SAA town office, years ago, a minor celebrity, someone who had been a 'has been' 20 years earlier, a third rate local soap opera star, came in and wanted a seat on a flight. I told him the computer system was down, the dreaded SAAFARI, and that I'd ring him when back on line. He stormed off to a travel agency where they 'knew what they were doing', and didn't give me the chance to explain that they used SAAFARI too and thus would also be off-line.
10 minutes later he was back and I had to ask him his name - I genuinely didn't know who he was, only found out later from my colleagues who thought I'd done it to piss him off, and then when he barked his name at me and told me who he was, I didn't know how to spell it. He was most indignant when I told him I didn't watch TV, least of all third rate local soap operas. A couple of years later he was involved in a rather unsavoury scandal.