Went to Elder beermann's day 1 of foreclosure sal...

Went to Elder beermann's day 1 of foreclosure sale. It was horrible they tried ripping me off. When they rang my items up they only gave me the 10% discount I had yellow dot items which qualify for 30% discount After I looked at my receipt and realize what they did, they said all sales were final and they could not give me the correct discount. Long story short I ended up getting my discount but not before I track down a manager.