Very bad service from FNB

Since November 2018 FNB have been charging my business rental for 2 credit card machines even thou for the past 9 years I only have one! During January I got a call that they must upgrade the one I have. I could not talk and ask them to make contact again. Never heard from them again. Yesterday the one I have stopped working!! I called the help line and they informed me that they have discontinued that model and I will not be able to use it any more. So when will the upgrade be done I asked? Today before close of business. Unfortunately is it already the end of day two!! So..... after 5 called to the helpline and two days I still can not trade, I still pay double for one machine that does not work..... As if ESKOM and the bad economy is not enough the bank has to prevent me from making money as well? Very disappointed FNB!