BAD SERVICE FROM CAPITEC BANK

I am worried about the service Capitec bank is giving to their customers..My bank account was frozen because I am a self employed and using my account to receive money from my customers. I am stuck now as I can't withdraw cash from my account. I went to the bank and when I asked them what is the problem they told me is because somebody sent money to my account. So how will I know that a person will transfer money to my account *****ulently?I am not a *****ster. Can they please unblock my account? My name is Modiba EM. My acc no is ***.ID no *** Cell no ***