One may be a random fluke, but two in a short time indicates that it's an intentional action which definitely should be called out. For an action like this (re

One may be a random fluke, but two in a short time indicates that it's an intentional action which definitely should be called out. For an action like this (rescinding written offers after acceptance) it's not appropriate to say "just two cases", as this should be a "never happen" event not merely a rare occurrence - one case is already too much and should result in a formal public apology and assertion if it's an isolated incident that won't get repeated, but two cases - proving that it is not an isolated exceptional incident - is simply outrageous.