Time to get a grip on reality here, and learn what your legal rights are. Forget the BBB!
The BBB has absolutely no power to make anyone do anything. The BBB is a useless and corrupt organization that serves no purpose to the general public.
STAY OFF THE PHONE!!! Phone calls do not protect your rights under the law.
Always make any disputes in writing, and send via cerified mail, return reciept requested. Be sure to put the certified# in the body of the letter and keep a copy for your records. This proves exactly what you sent.
The FAIR CREDIT BILLING ACT explains your rights and the responsibilities of the credit card issuer during the dispute process. You can read this at FTC.gov.
You need to be VERY clear in your dispute to the bank as to exactly what your dispute is, and the exact dollar amount, etc.
You never told us here what your actual dispute was.
Proper terminology is essential. Was the entire transaction fraudulent, or was just the amount wrong, or what? Did you return merchandise and not recieve the credit, did you pay for merchandise that you did not get, etc... This makes a big difference in the resolution process.