Review EXACT Store Vincent Park East London

I went into the store to exchange a dress I recieved as a gift. I asked them if I could exchange the item and the lady looked at me up and down and said to me as if I was stealing that I need the receipt to return an item. I told the lady that I do not have it because it was a gift and she refused to help me and was quite frankly extremely rude. I felt so intimidated as if I was doing something wrong. I will never purchase an item from any exact store again because of this treatment but I want to swop the dress so I can actually use it as it's to big. I am very disappointed at the service and I am quite sad that this is how a customer gets spoken to