My site is down?

Hi all, when I went to my site this morning it said Page 404 not found and when I tried to log in to Weebly it says my email address does not exist. Has anyone had this problem before? I have contacted Weebly to assist but I think our time zones are very different and I urgently need help to get the site back up within the next hour, or at least the content of the site. If anyone can assist I would really appreciate it. Thank you so much.