Poor customer service

I am sooo livid beyond measures , the disrespect the staff has toward customers is unbelievable im a regular customer and receive same bad service each time I go there going to the supervisor seems not to be working . I was told the card services are offline after waiting in the que for 30minutes I asked so what's gonna happen with me getting my stamps the cashier did not seem bothered and was told "you are not the first customer to complain you WONT do nothing about it " constantly having to fight or argue for my consumer rights always when I go to pick and pay in steeldale is a daily basis if I had another pick and pay hyper close by id go there instead (with a blink of an eye)...intervene please