This reminds me that every single time Google recruiters tried to reach me after I interviewed (and got rejected) there they just stopped responding me after I got back to them
I find this extremely rude behaviour and managed to make my will of ever interviewing back to Google plummet to zero (that and the stories I've heard)
Also, yes, people screw up (me inclusive), get passed, such is life, but really, people should avoid alienating their candidates, and this seems to happen more often than not.