Capitec Bank closed my account unfairly

Capitec closed my account without any notice and even refused to re open my account when I went to my nearest branch. They told me they had closed my account because they suspected ***** from another individual who had transferred R1000 into my account before of which i don't know who that person is since I'm self employed and used my personal account to receive money from all my clients. I had tried to trace who that person was but could not even have access to my bank statement. They said there is no chance to get my account back and even the money that was is my account as well.