Worse service I have ever received in my life!

<p>I went to discount cash and carry on the 3 June 2017. And when I went to pay the card machine didn't want to work. So I was trying to explain to the cashier that there card machines is the old machines and my card only works in the newer ones. He got so rude and abrupt and told me I must just leave him and not talk. I mean how do you even talk to a customer like that. I had to leave everything and walk out. I am so shocked at this horrible service as I have been buying from then for years and have never experienced such service!</p>