Well............ if it wasn't YOUR fault on the paperwork end........ tell whoever's fault it is that they will be paying for a hotel and storage for your stuff if you need that, and something for YOUR inconvience. ............... or you will see them in court.
Judges probably won't look favorably on someone's ineptness causing anothers misery........ just a thought.
oh....... and yes it's common. Finding good realtors, loan officers, and having everthing fall in place........and at the last minute somone screwing up the mix..... yeah it's more common than you think.