Bad service

So early in the morning at 9:35 at the Grove mall,I was in a queue outside the ATM to deposit money ,the was movement I simply ask a question if the deposit machine is working ,the security guard just wen off on me,he was very rude he made me feel small,he said to me I must just wait and stop asking him questions...he could have simply said they are busy fixing machines ,please wait abit...the one that assisted me has a big body...I'm so disappointed with that service,I rate standard bank very high because I love banking there...please address this matter ,we simply ask because we don't know nor because we stupid....I'm very old to be treated like that...