Devious Bank - FNB [Head Office]

I have been a loyal client for over 50 years with FNB and my mum was with them for her entire life. But the quality of service has deteriorated to such an extent that I am tempted to move all my investments and salary from FNB to another bank. I have a Savings Pocket with FNB for the past few years and been saving money in this account. I have noticed that from a few months ago, I am not earning any money in the account. Upon contacting them, I was told that the terms and conditions have changed and the consultant told me that the Client is NOT informed of any changes that take place and its in the Terms and Conditions. However, the terms and conditions are not sent to clients nor are they explained. Can FNB show me a recording of our conversation of their claim because all calls are recorded? FNB is devious, arrogant and disrespectful to Clients. I am sadly to say a Client of this Devious !!!!