Trouble Logging In

I have been having troubles logging into my WordPress site for months now. My site is hosted by godaddy.com and I have gone back and restored the old files for the last two months, it worked the first time, but not this time.

But I discovered something weird the last time I was logged in, and now I can’t get logged back in. My username has been changed. When I originally set up my username I used my name, and the last time I was logged in I noticed a user name that began with “fb” followed by a bunch of numbers. I can no longer log in using my user name and password, even though the last time I was logged in I changed the e-mail address, that was also changed to something like admin@facebook-fake.com. Don’t know how the e-mail address got changed either.

HELP!!!

Thanks
Tim