Disgusting Customer treatment

<p>This evening 2 staff members at your Engen Silver Lakes branch, Louis & Zodwa, became verbally abusive when I was unhappy about swiping my card twice 'because the machine was not working'. When I got upset and tried to speak to a manger, I was told he would only be back in the morning, and that: "you can cry, we don't care, but you are not going home until you swipe again". My issue has little to do with the 'double-swiping' (which the banks constantly warn us not to do), and everything with the sneering & aggression that eventually another customer had to intervene to prevent, while the attendant Louis tried to follow me to my car and continue telling me "cry, we don't care!!!" What kind of a business allows its staff to behave like this? </p>