WordPress not working after hack

Hello, I’ve had a lot of problems with my site today. It was hacked by ‘Reda Phantom’ and I didn’t know how to get his iframe off my website. I could still access the back end, but not see the front of my site.

My host, hosting24.com managed to restore it back to an earlier date but in the process I’ve lost my menu, a couple of posts and widgets. Also, I now don’t have access to any of my wordpress files. I access WP online and when I first tried to login it said ‘You do not have sufficient permissions to access this page.’ so I resent the password and still can’t login because it now says the key wasn’t recognised. I can’t even login using my original password now, and I’m at a complete loss as to what to do. Please help!

Thank you!