One Card Failing Hopelessly

Upgraded my account cheque account from Gold to the Premier account, the promise one is given from the bank is that one is able to use one card and just select the option that will enable one to use (CHQ or Credit card) since the date of the card being activated, when I try use my cheque accout it card will be rejected and the default option being the credit card is only avaiable for use at merchants. I have been complaining none-stop to the call centre and all the consultants are saying that the card is linked correctly. The one consutalnt even suggetsed that the incorrect option is being used by their merchants when I advised that Im the one selecting the option it was a silence that suggetsed that Im the stupid one.... Consultants cant even resolve issues and want to act as if you stupid..... Can this be addressed