Stndard Banks no service policy

I supp**** standard bank with my new cell number months ago and it was all going fine till I tried to make a payment today and was not recieving my OTP to authorise the transaction. Upon calling them they notified me that this was because I had provided the incorrect number for the OTP, but I am recieving all my notifications on the number I am currently using. obviously they can not fix this, I must go to a branch and spend 3-5 hours as usual waiting. Last time this happened they refused to let my 8 month old son and fiance back into the bank as they posed a \security risk". Also note at that time I was in the bank with the car keys"