Neathborn

I have an appointment for my naturalisation interview this Wednesday and have misplaced my I-797C (appointment notice). As soon as I realised I'd lost the notice, I called USIS to ask what to do and was told just to turn up at my appointment without the notice and see if they'd still do the interview (since it was too late to request a duplicate notice). If they don't let me in for the interview, I was told to immediately call USIS to reschedule. I was just wondering if anyone else has ever lost their notice and still been given their interview? Of course, it goes without saying that losing the notice wasn't a very clever thing to do .