FNB JUST PROBLEMS !!!!

FNB is a bank you can use if you want endless problems. i opened my account firstly after 5 times of in and out as they made a joke of me. wrote a letter to head office and put in a complaint. branch manager demanded if withdraw as the poor women is goin to be fired. i did that. now their new joke is to freez my account because i am foreigner, this after i was born in south Africa with a South African Id. They say i bring in money and must declare with sars. what ????? i work for R3000PM and have never in my life even known how to do foreign money. There is NO Proof on bank statement. would have been nice to get the money they talking about !!!!! i did went to a branch and my account was open again. two weeks later they freeze it again. big joke ?????? Any lawyer here that can help me as this is a problem.I am young and want to build a credit score and FNB is an huge problem. i have the right as an south African to have a bank account. My employer is angry because this is causing problem with my salary,