Unreliable app

So I, trying to make my life easier and believing all the hype about great service decided to switch to FNB, I then decided to download the FNB app....all of this being bad ideas on my part! Despite being promised great service with a "how can we help you" attitude I have yet to receive this! With the app and premium banking I am supposed to be in want for nothing yet EVERYTIME I send a msg through to "my dedicated team of bankers" they ALWAYS tell me to contact someone else and "very kindly" provide me with another number to call...that's if the app even works...more often than I care to keep track of the app doesn't even work leaving me stranded and unable to use the expensive services I pay for! I am very disappointed and I am tired of settling for bad service!