With regards your last paragraph, is there any evidence of this? Any place Facebook says "we do not, and will not, use information X for ad targeting"?
Also, the "clear history" feature should be rolling out (or maybe it already rolled out in your country) that lets you dissociate any 3rd party info from your profile.
Your company has proven it cannot be trusted and will do anything it can get away with and has already crossed the line of "lying is totally OK, and if we're caught we're just gonna publish a bullshit PR-speak fake apology".
Why should anyone trust it this time?