FNB (First National Bank) is robbing me of my money because I am not a South African Citizen

I opened a Non-Resident Account at FNB Silverton Branch. When I was opening the account they never gave me a list of who is allowed to deposit money on my account. I then did a job at a Primary School. Now, FNB is refusing to give me my money. They are saying a School is Government and Government is not allowed to pay a Non-resident Account. They are refusing to give me money, yet they never told me that Certain Institutions were not allowed to pay me. I'm being treated by FNB very terrible as if I am not a human being. I'm very much disappointed to the racialism I'm receiving from FNB.