Very disappointed in lack of Communication

I signed up for a Premier account with Fnb a few months ago. At the time, I was informed that as a Premier account holder, I would get the benefit of 12 Slow Lounge visits a year. I used 2 visits in September and 3 visits including myself in October. To my my knowledge at the time, I was aware I would pay for 1 extra person because I am entitled to only 2 entries per visit. A few days later I got my fnb statement only to find out that I had been billed for all 3 of us. After contacting FNB I was told that the rules had changed and I was only now entitled to 2 visits per annum! I am absolutely furious. If I had know this, I would not have used the lounge. I am utterly disappointed in the fact that FNB failed to inform me of changes to the benefits I had.