security guards chased me from the mall

im from tongaat and my wife works in umhlanga so she starts work at 3 in the morning and after dropping her i went to gateway as i needed a bank statement from the standard bank atm and they told me that im not allowed in the mall, they treated me like a ******** and embarrassed me in front of all the cleaning staff. i was told that you must go back to tongaat and come during working hours as im not allowed to be there. i feel that this is a public place and atms should be available to use at any time. i will also relate this experience with standard bank and having them consider moving out of gateway as they will lose clients due to this