Topic: Can't login to admin area

At first I was given a login error
Then I was locked out for to many tries
so I used the 'Can't remember password' function
it sent me a password that I didn't recognize
with symbols that I have never seen, such as:
Ÿ  ¬

When a login seem successful I just get a blank screen, like it is starting to load,
but it stays blank, and the 'view source shows blank page'

I went in through 'phpMyAdmin' and saw that there is another user
where there should only be me.

I think I have been Hacked
I still have gotten a payment, that has not been changed

Can I change my password in phpMyAdmin ???

What should I do ???