Wasn't really misrepresenting — they pretty clearly state that they overcharged in their contacts, I think they were very clueless in the way they handled this.
In your first post here you showed VA's emailed response (partly redacted) then claimed "they admit I was overcharged".
That email from VA actually suggested "we have confirmed that the charges made were charged correctly". From my reading, that is anything but VA pretty clearly stating they overcharged you ... that is them claiming the charges you incurred were correct.
VA's admission may well have come later - and there is no doubt they could have handled this situation far,far better given the sum involved - but feel the above is misrepresenting VA.
YMMV. At any rate, as I said, genuinely sympathetic as can understand this has created financial stress.