Complaint of a rude cashier

Today I was rudely and badly treated by a cashier at Ackermans kagiso Mall Shop No. 13 he goes by the name of Thabiso. I wanted to release my laybuy he asked for the slip or ID I said I don't have then he rep**** by he can't assist if I don't have those two documents. Fine while in the process of asking him if atleast I can pay three quarters of the laybuy cause it expires tommorw rudely and blatantly calls another customer when I said ill report him he responded as and I qoute"working at Ackermans is a hobby" Tried sending an email to Ackermans but was unsuccessful. Error of some sort. I need him to be dealt with because I'm an account holder whom happens to have years of customer service and sales experience so I know when the customer is wrong and when the employee is wrong. A hound lady by the name of Nikiwe assited me and must say she was top notch