If you have a problem with Chase and they are not being reasonable, here are some suggestions. You might want to do them all.
First and foremost, document everything you do with them, including dates and times, and detailed notes about who/what/where. If you want to record your phone conversations with Chase, please read this first.
Third, contact the consumer affairs person at your local TV station or newspaper. This is absolutely one of the most effective means of getting a big company like Chase to change their tune.
Fourth, try contacting some upper-level management types at Chase through the contact information here.
Last, file a complaint with Chase Banks regulator. Here is information on Chase’s regulator(s).
You can also look for more help at some other Chase focuses sites:
If you have a problem with Chase raising your minimum payment, join the class-action lawsuit: http://www.girardgibbs.com/chase.asp