Deleted Admin Login

[eluser]service[/eluser]
My website was developed by an outsource company and by mistake i deleted the main admin access for the live site admin control panel, when i checked the Database the admin login does not look same like what i access...

Example: if my login name was "access" in DB MySql show "access112233" and password if it was "123455" in DB MySql it is "2628ab863d1510f361f3c5d429abc123"

i changed password and login still i cannot access the site admin area, i tried to use the DB access details login/password still it is not working on the site (i think it is encrypted by script or something).

can you tell me how can i solve this problem to access the site admin area?

thanks