Waitrose Shop Assistant interview questions

Was told to arrive at least 5 mins early, came 15 minutes early. Rang buzzer as told, person on intercom said to come back later without giving a time. I came back 10 mins later and there was a queue of people waiting outside on the street, all waiting for the interview! We waited for 15 mins past the time we were told to be there. While we waited in the reception they collected our passports and gave us a form to fill in: what times, store preferred, uniform size. Then we waited a further hour; long after we had completed the form. After this we were led in to a room and given a group task, which was explained very badly. There weren't enough laminates to go around to be able to participate fully. This was around 20 mins. Then people were led away individually for one to one with the 3 representatives. No one asked for the photocopies of the passport that had been stressed to bring in the emails. Possibly a sign that they had made up their minds that we hadn't been hired. Really had expected more from Waitrose, since they stress customer service and couldn't even extend it to potential employees.