Barclays Bank Juniper Bank Unscrupulous business practice Wilmington, Delaware

My husband is in the Air Force and by law under the Service Member's Civil Relief Act (SCRA), he can't be charged more than 5.9% interest on a credit card. He is an authorized user on the account so we tried to engage the SCRA interest rate. They told us initially that he was changed to the primary card holder for the account. They then told me to call back the next day to change the liability from myself from him. When he called back the next day they said that this was no longer possible. They said the only way to make him the primary account holder was to open an account himself at which time they automatically started trying to get him to open an account. They have done everything in their power to try and keep him from being the primary account holder so as to avoid changing the interest rate to a lower one. When asked if we could speak with a supervisor it seemed as though they were trying to avoid that from happening. They either said he/she was busy, "just entered a call" or that it might take 20-30 minutes. He said that was fine and then they came back with "even an hour?" I know these calls are recorded and if so there is a strong case for negligence and unscrupulous business practices taking place here.