My experience at Steers was the worst ever

On Friday evening at around 6:03pm I arrived at Steers in Watergate. I placed my order at the drive thru and proceeded to the next window to pay. Then I moved on to the collection window. The window was closed and I thought it was due to the weather which was understandable. Then at 6:11pm I was still waiting at the collection window. I then decided to hoot to find out what is happening with my order as it was not a difficult order. I hooted for a few minutes and finally when someone came to the window, all he said before I could say something, is that the order is coming now and the window shut again. At this stage I am completely frustrated and angry. I hooted again and again and no one came to the window. My partner then had enough and decided to go into the store. Expecting the store to be full and busy for the reason we were given such appalling service, she found the store empty and staff just lounging around. She asked where the order was and when the manager asked where the order was she was told they forgot about the order. Now this is totally unacceptable behaviour and service from a franchise and company like Steers.