Yep. Staff member should have told her.
Aldi have pissed me off a few times this past week or so.
Letting people pack at the till! (VERY annoying.)
Also
Till no 5 was closing, and I hadn't noticed. As I went to put my stuff on the belt, the checkout operator said 'I'm closing, go to till 4.' So I did as she said. I waited patiently behind 3 people there, and some bloody woman joined the queue at till 5, and piled her 20 odd items on the conveyor belt. She completely ignored the CLOSED sign on the conveyor belt, and as she was doing it the checkout operator said NOTHING. She told me to move to till 4, but said NOTHING to this woman.
So the fucking bint sailed through while I was still standing at till 4.
I don't mind taking my turn (or the tills closing when they need to,) but this was a piss take. I was actually fuming. (I know - first world problems!)
I got served 3 or 4 minutes later, and saw the woman afterwards closing her boot lid and driving off in her 4X4. 
I had the last laugh though. I saw her again on the car park of the little co-op we have on the fringes of town, and I beat her to the last parking space. I was only in the shop for 2 minutes and when I came back out, she was still sitting there waiting for one of the 16 parking spaces to come up. So I got in my car and opened a pack of crisps and my bottle of mineral water, and sat there with the radio on, reading my magazine. I turned around after a few minutes and she had pulled up much closer to me, and was staring at me purple in the face with rage, as she was still waiting for a space.
As soon as a space popped up (another 2 or 3 minutes later,) she drove into it, and I drove off.
Petty? Moi? 