Chase Manhattan Bank Informative - Similar experience to others
I set up my due date on my card (with an agent there) to align with when we get paid. They changed the due date and when my payment came in they charged me $39 late fee plus $15 finance charge.
When I called, they wouldn't refund a cent until I talked to a manager (and I had to call back because the first time they sent me to a voicemail for a manager and it was full). Finally she agreed to pay back the $39, but not the finance charge. The first agent did say she'd changed my due date back.
So then I set up a payment from their own website so I'd be assured of being on time and it was still considered late (they didn't honor the changed due date either). I used the presaved bank account info from their site which turned out to be my closed bank account from 1 1/2 years ago (my fault, I didn't notice). So they charged me $39 for being 'late' and $39 for the returned payment. I doubt I see either of them back and I don't look forward to hearing from them.
So that's $135 in charges which wouldn't have occurred if they didn't change my due date.
They are really difficult to work with. Had the same problems when my bank account was with them. I'd deposited $800 in CASH with a teller and the online "available balance" said $800+ when I checked it that night. Then a check came through, which was backdated and they bounced it. Charged me $39 and would not take it off. Very greedy company.