FNB Cares, what a joke????

I bought a new phone from FNB last year with a new telephone number. It is linked to the FNB app and I have used it repeatedly on numerous occasions. One would have thought that FNB had automatically changed my number on my profile. But NO, this seems to be beyond any ones comprehension. Today I wanted to make a payment but for some unknown reason it has decided that it will not recognize me. I tried to notify FNB of my new number but again it still sends an OTP to my old number. I phoned premier banking 3 times and I was told my telephone number has been changed but that I must now go to an ATM to confirm this but why now as I have been using this phone now since 2019. I bought this phone because of the OTP app and I have been using it now for a few months but suddenly it does not recognize the phone. WHY, WHY? is this not working. I am 74 years of age and I no longer drive so now I must ask my family who are working and can to take me to an ATM which is in Meyerton as their is no ATM in Henley on Klip at month end, another thing that is lacking with FNB not enough ATM's. What the hell is going on, does FNB only employ idiots who do not know how to work the parameters of internet online banking. What now must I tell the person who is expecting a payment from me? Should I tell him that FNB does not care for its clients and that he will have to wait for his money until I get to an ATM. I have been banking with FNB for 40plus years and now I think it is time to leave FNB, as I am so ****** angry that I am paying for a dysfunctional phone and banking service that no longer cares for its clients. Why after so many months must I go to an ATM so that FNB can recognize my phone that they supp**** to me.