Yes I'm sure, because I'm not an idiot?! I know the difference, despite living in SH.
It happens every year, I've lived here 8 and for the first 2 when I got the appointment* I asked if my mum could be here because I couldn't.
"No, it has to be a tenant"
Had to be rescheduled.
What's to misunderstand?
(*Well that was after being threatened with a locksmith and forced entry because I'd 'refused' entry because I wasn't told about the first appointment and of course I wasn't in, so I was seen as obstructive. That at least has been improved as I now get a text. Much easier to be in for/reschedule an appointment you know you have)
And yes, there's no logical reason for it, that's why it's so frustrating, but I don't make the rules, they do, I just have to abide by them if I want to live here. They told me it was because the tenant needed to sign for the job being done.
But seemingly you're determined that it doesn't happen, you're well used to being told you're lying or making stuff up when you live in SH, the stereotype of the type of people who live in SH and how they're perceived is alive and kicking.