I haven't had any communication from iPhoneUnlockUK - the website which falsely claimed that the Guardian had recommended its software - but it seems they've been reading us, regardless.
When I went to have a look at their website this morning I noticed that the wording has changed on the site. Instead of saying that the Guardian, Which? and ITV had given the site a recommendation, it now says that it has "been recently been featured in articles by Which!, The Guardian and ITV News" (sic).
We call that "invisible mending" here.