Smart shopper personal discounts

For many months have have been downloading my personal discounts form the pick and pay app to my smart shopper card. When i present my card the discounts were automatically app****. Two weeks ago I gain downloaded the discounts when I went into the store and made the purchase no discounts were app****. I went to show one of the management team the discounts on my app. After they first checked that product I had taken corresponded with the discount they phoned head office. I spoke to head office who advised me I used the discount the previous day and when they checked they saw that was incorrect. Management took a copy of my card and my details and said they are forwarding to head office who will contact me. I have still not heard anything. Again on 2/9/2017 I went to make a purchase and no discounts were app**** at the till despite it being on my app. I again approached management who took my card to the kiosk and no discounts were loaded despite it saying on the app there are 10 discounts loaded on the card. Once again management were unable to assist. i suggest management is trained on smart shopper card discounts