Benefits change withou me knowing

Previously I had the option of 2x slow lounge visits on my cheque card. In December I used the lounge twice. Normally they debit and then credit you. This time they only debited me. Yesterday when I query about it they said it was changed in July and the new rules are available at the lounge reception. I wasnt notified about the changes and now I must pay for my visits to the lounge. I understand that the rules changed but I need to be notified which didnt happened. I am going to change my bank now. This is really not acceptable