Why they have I don't know, but they absolutely do appear to have deleted all Tweets between yesterday and June 18, 2021, with the exception of one about strikes sent on 20th March. This could of course have been a panicked error. There also appear to be replies missing from yesterday, but this one was still there:
View attachment 155363
Wow, what outrageously rude bluntness to a passenger being very polite. Not "no, I'm afraid we can't, because we don't have enough drivers/guards/units", but just "no". Get lost. Sorry not sorry. We've got your money, now get stuffed.
An absolutely stinking operation which should be closed down forthwith.
Text version:
User (I obscured name and handle): OK thanks for clarifying. Any plans to add an extra service today to ease congestion?
GC: No. ^JM