Unknown bank fees

Please can someone from absa assist. I have a line item and money taken out of my account under the reference Admin Fee for alot of money. I cannot get through to anyone and i am not sure why absa charges me twice for admin, together my admin fees have been well over R1200 this month alone. I dont even have any loans or credit card with Absa. My bank statement gives no information. My name is Rumon Ramphal, My cell number is ***