Very bad service

Saturday 30.April I went to Nedbank Three Rivers to link my internet banking to my phone just to be insulted in the Bank and to see on a lync that John at inquiries asked the consulatant that was helping what are you doing for that crazy lady. Really is that how you talk about you clients nice. And then there is the problem with me account that no one is willing to listen or help on my personal loan Nedbank is deduction 2 amounts were one is suppose to be a Home loan. Home loan tells me to phone personal loans and personal loans tells me to phone Home loans can no one at Nedbank see that they messed up my account why is it so difficult just to correct an error which I am sure will not take longer than 2 min