Incompetence and disrespect.

I am writing this on behalf of a friend who unfortunately does not have an account and experienced an extreme lack of courtesy by a cashier at Engen. He is a regular customer, visiting and purchasing products from the convenient store almost every day, but it appears customer loyalty is not something which this cashier recognizes nor respects. Upon purchasing products the grand total was R50.30, my friend was 30 cents short and upon requesting to come back with the 30 cents and pay his debt (as he lives within a close proximity to the petrol station) he was met with an argument and utter disrespect. My friend then return to Engen in order to complain and voice his irritability with regards to this cashier to the manager, an apology is all he asked and yet what he received was the aforementioned *********** cashier calling him a \****"followed by her turning her back and walking away from him"