URGENT DISGRUNTLED PATHETIC SERVICE

I have three accounts with FNB, I have a Private Wealth account, a Business account and Euro Global account. As an immigrant based in Germany i have had endless issues with FNB doing all sorts of weird **** on my account. I had funds removed from my account that some random person accidentally transferred to me after i told that man he must go to FNB to do the reversal as i will not touch other peoples money let alone transfer to another account. A ***** mark stated on my account and no communication not once. I have requested that i get contacted via email on numerous occasions and to date no one has gotten back to me. I have left messages with the team lead but no one has bothered. THIS IS NOT THE SERVICE LET ALONE SECURITY THAT ANY IMMIGRANT SHOULD HAVE WHILE BEING IN A NEW COUNTRY AND ASSUMING THAT FNB PROTECTS THEIR PRIVACY AND THEM AS A CUSTOMER : Mervyn Miloane is my banker - who i have never even been contacted by.