Around 3 mths ago I was at a meeting and was handed responsibility for a piece of work. Manager assigned it to me in front of big bosses.
I had some questions after working on it for a week or so and went to manager. Phone call NOT email (major error). Manager told me there were “issues flying around you don’t know about, this work is quite touchy so I’ll get back to you but just leave the work for now”.
I followed up a month later, same response.
Email this morning from big bosses asking for the outcome of the work. Manager replies “Originalsauce” has that work 
I don’t have the fucking work because they told me to leave it whilst they dealt with the “sensitive issues”. I’ve tried calling manager 3 times this afternoon and they won’t pick up.
Options are I write an email basically calling them out on knowing they had asked me to stop work or ???
They has form for this but never so blatant before