Excessive price / bad customer service

I went into engen on the bluff unfortunately there was load shedding at the time , I went to purchase a 500ml lucozade I get to the till and the scanner is not working due to no power yet the card machine for payment is powered . They then advise me the lucozade is 21.95 that is a disgrace for a price so I questioned it as they could not scan to prove to me , I have never paid such an amount for that item it normally costs 16 rand max elsewhere I know this as I buy it quite regularly , next thing due to my disgust over the price the teller and the manger of the engen start speaking in the mother tongue (they were both of African descent )about me I left so enraged I will never go back to that garage again engen you should be ashamed firstly about your pricing if it was in fact the correct price and secondly for your staff even management to s****** in such sly manner of talking in another language about your customers while they standing two feet away . Disgraceful truly <br>