Lack of communication from ABSA

I've been a loyal customer for more than ten years now, but I am extremely unhappy with the lack of communication from ABSA. The interest rate on my home loan agreement has gone up several times without any notification. Also, my Flexi Value Bundle Account was changed to a Gold Account without any prior notification. I simply noticed that my banking costs went up considerably. When I asked a consultant if I could change back to a Flexi Value Bundle, I was told that I could not downgrade. I find this absolutely unacceptable. How am I supposed to trust my bank if I am not informed about changes to my accounts?