I had Chase, years ago and was so displeased with their pratices I paid the card off and closed the account.
Recently, my previous credit card company was purchased by Chase, much to my dismay. Not wanting to deal with Chase again, I paid off my the balance as stated. They charged interest for the days that the card held a balance the previous month. When I called to see what was going on, I got an extremely rude representative. No one offered any solution, except "pay a little extra and we'll send you a check for the amount that you over pay."
Once I get everything settled, I will be closing...