Target changed its price adjustment policy

So I was just informed they changed their policy and it awful. Example if you bought something with your red card for $100-5% (redcard discount)=$95. Then it goes on sale the next day for $50. You used to be able to ask for an adjustment and they would give you the difference which would be $45 dollars. Not any more now they say $45 is the difference but we are going to take back the 5% discount so you get $40 dollars. When I told them that's not fair or right and simply doesn't make sense I was told its policy now.