Additional Account Fees charged on credit card

Dear Sirs, It has come to my attention that you are suddenly charging an additional fee on my credit card every month, over and above the usual fee. On enquiry with your call centre I was told this is a new fee that will offer additional benefits. When I asked what benefits I was told to check your website. I have no interest in the extra benefit being offered and asked if it is optional and I was told no, not optional. I think this is highly irregular and you should review this additional charge which has been added in a totally sneaky manner without informing your customers prior to this. This is a matter for the banking ombudsman to investigate in my opinion. As a long standing customer of over 35 years, I have a list of complaints recently regarding the poor service I have been receiving from Std Bank, queries which have not been resolved as yet. Your service has deteriorated so much over the years which is extremely disappointing.