Losing the Game

Game recently had a special going. One was 2 xbox1 or ps4 games for 500. However they didn't specify only selected titles. So my husband took 4 games and they refused to give him the discount. This is after seeing many others buying the same titles at the discounted price. I emailed them my concerns and they still refused to help me. Eventually completely ignored my emails. We went back to the store the next day and they still refused, magically producing a list now. When we asked why other stores were giving discount on the titles we selected they said they had different lists. But the buyer confirmed all stores got the same list. I have been in this battle for 3 days now and I still have not received a response. Needless to say the manager spoke down on me like I was stupid and spoke over me, ignoring what I had to say. And raised his voice to me. This is disappointing for such a large company. If it was a printing error that is an internal issue not mine. I would like my reference number to collect the games I selected at the special price.