Yes, but it's not just Crewe, we have another thread with Coventry staff making up complete rubbish, and another thread with Chorley booking office staff making up nonsense about advance tickets, both in the last couple of days.
It's something which is very common these days - presumably staff aren't trained properly but this doesn't excuse them making things up when they don't know, presumably to accord with their view of how things ought to be rather than how they really are.
I don't personally understand it, I spent a lot of my career not knowing things and I didn't make things up when I didn't know. There is something in the rail industry which encourages this behaviour, I surmise.
EDIT I should add that Wilmslow staff have been the exception to this - if they don't know they say so and, more often than not, are happy to accept what I say as true. Or, at least, act as if they're happy to go and find out.