FNB - service center - (online help)

I want to change the notification cellphone number for my one business account if I do internet banking. I have more than 1 busy account link to my id. The new cell number is a director cell on the business account. He has a debit card whish he is using. I want him to manage and track account. I have asked them to be very careful NOT to impact or change my other business accounts logging in detail. Needless to say - after more than an hour at the bank, Branch FNB Grove Mall, all my accounts passwords have been revoked. The lady who helps me was very helpful and took me to ATM to change the notification number there. When testing, it was not working and still sent notifications to old number. When try to sign on the system forces me to change sign on details, which I specifically don't want to do. The lady did phone FNB service center 3 times. No one could help, get put through from one to person to the next. Line gets drops (not sure deliberate or not). But no luck. My frustration was very high and decide to call it a day.

At home try to log on to my other business accounts web site and guess what, I need to change all sign-On's and passwords.

Not the lady's fault - the system is bad. She even asked me in beginning if I don't want to open personal account at FNB and I my answer was " you see why I don't want a personal account at FNB"