I was in a store shopping with my dd who has asd. As we were near the checkouts she had a melt down over something and knocked some gift cards off the shelf displayed by the till. I tried I help encourage her to pick them up but she wouldn't so I asked my son to help. As he was picking them up dd knocked some more onto the floor. At this point I was trying to hold her to stop her knocking any more off and decided it would be best to remove her from the shop before she does anything else. (She did not damage anything or break anything) I fully accept I could have picked them all up but at that moment the best thing seemed to be to remove her from the shop. As I was walking out and got outside I was chased by a security guard who was shouting at us. I was very shocked couldn't actually believe it. I tried to explain to him she has asd but he was having none of it and told me we were banned from the shop! I found this really extreme and it was also distressing for my dd who I removed from the shop to calm down so made her worse. I have since complained to the shop (this happened on the 30th of October) and have not received any response at all. I've chased it up 4 times and always get told the same thing, someone will contact me but it never happens. I feel it's very extreme to be banned from a shop over this and have never been banned from anywhere in my life. What more can I do as they won't respond to my complaint.