What do you mean by the word 'wildly'? It suggests 'extremely' inaccurate. Which could be due to either incompetence or an attempt to deliberately mislead. FYI - the use of the word 'deliberate' in HMRC usage is not quite the same as one would normally use the term, as it can still include incompetence. I know that because I've challenged them on it (not as a result of my own affairs I might add).