I'm not sure they did ever lie about Villa. From my recollection Melbourne City never committed to a number of games that he would play for them, and as far as I know still haven't confirmed whether or not he would return this season (despite everyone knowing the answer to that).
With Villa, like it has been here lack of communication has been a big issue that has allowed speculation to run rampant. That hasn't helped matters, with Lampard neither has the incorrect, or at best ambiguous statements from both clubs involved.
CFG doesn't tend to give updates, they say something when something needs to be said. It can be frustrating as a supporter, and in both the Villa and Lampard cases I think a lot of the discontent could have been avoided if the clubs concerned were more upfront about things.