Terrible Customer Service

I have a credit card with FNB. On Friday 12 April, a consultant from FNB phoned me to offer me a decrease in interest rate if I agree to an increase in my credit limit. We went through the call, with him taking my details. I agreed to an increase in limit with the hope that the interest rate will decrease as promised by the consultant. At the end of the call when the consultant was done taking all my details and updating with the new limit, he told me the new interest rate, which was exactly the same as the one I was on anyway. I brought it to his attention that the rate has not decreased/changed, instead of keeping to his promise, he blamed the system by saying that there was no way he was going to predict what the results/outcomes of the interest rates were going to be, especially because he did not even know what my interest rate was before him calling me. Basically, he sold me lies! I am not happy with this service received from FNB, at least he should have done something to honour his promise that he made at the beginning of the phone call that he will decrease the interest rate. This was not great customer service at all. There are other terrible things I have experienced with FNB (especially on the same Friday). The service they have given me in terms of handling my queries has be a poor one, which makes me even think of changing banks. Yes it may be viewed as small things by others, but I am not happy! To me, customer service is everything and the small little things that we tend to ignore often add up over time.