Tills off line

I visited Jet at Eastgate yesterday and did my shopping, when I went to the till. The tellers were hovering around and looked confused. When I went to pay with my Thank u card from Edgars they said they were off line. But they don't apologise or try to explain what the problem is. Just shrug their shoulders and say \ I don't know I think it's off line?\" The tellers should be taught how to deal with customers and even make an announcement to let customers know that if they need to pay by card that their system is off line. So we don't waste our time doing shopping, then stand in the queue (when no one informs us that there is a problem) and only when we go to pay, tell us that they have a problem! I find the staff and management at Jet, Edgars and CNA are not very efficient and give poor service. However I would like to commend stores like Mr Price clothing, Clicks, Woolworths, Hyperama for the huge improvement in their service and customer care."