Edgar's gateway

I went to gateway in Dec 2017. They had a person by the Brian who was taking out photos for Christmas. To date I have no recieved my pictures. I did call through to Edgar's gateway with no response. I have called Brian he says he will be depositing the money however he does not have time. He has lost the photos and owes me 300. Edgar's should not have allow this person in or else Edgar's should have being responsible for the photos because this was done in the store. I need the company name of this Brian person. If he could do this to me imagine how many more people he has done it to and will do it to. This give Edgar's gateway a very bad reflection.