Background
I closed a checking account over 40 days ago at a large national bank in the US. I was told I would receive a check for the remainder (>$1000) in one to two weeks. I still have not received the check.
I have called their phone support and visited my local branch several times since with no success. Each meeting ends with a vague reference to "sorting things out with the back office". My last meeting was with a branch manager who said he would handle the issue personally and contact me when I could come in, sign an affidavit (that I hadn't received the check), and be paid out by the local branch. This was over a week ago now with no follow-up.
Question
What are my options? I'd like to get the check with as few trips/calls as possible from here. Is there a way to put some pressure on them to take this more seriously? Is there a length of time before I can report the money as stolen (I'm sure that isn't the correct term in this case)?
Additional Info
My original plan was to close the account in person to receive the funds immediately. Chase's tellers do not have the authority to close an account and there were no bankers available to help me that day so I was referred to the phone support which I used. The only drawback of the phone method appeared to be a 5-7 day delay on receiving the check.
Why did I not withdraw the money before closing the account on the phone? Chase charges a $10/month fee for allowing your balance to fall below a certain minimum ($1500). I did not want to find myself arguing about a $10 charge afterwards for having a 0$ balance for a day between the bank visit and the phone call.
UPDATE:
I have taken JohnFx's advice and filed a complaint with the OCC. The process was very straightforward and involved including contact information for all relevant parties and, in my case, an issue summary and timeline of my contact attempts with Chase (with confirmation numbers, names, etc). At this point, OCC will contact the bank on my behalf who will be expected to respond to me and copy them on the correspondence.