Loyal member not shown loyalty

<p>It must first be noted that despite this bad experience, I will remain a Kauai customer.</p> <p> </p> <p>I have been a customer of Kauais' since their opening at Menlyn Shopping Centre. I have always had and used the smoothie stickers card system. Many years ago I was advised to switch to the app, which was not up for long as there were some issues. I was told to go back to using my card until notified that the app is back up and running. I have still been using the card system up and until two weeks ago. The last entry on my card is a signature. I must be honest I can't list the Kauais' that have been issuing stickers and signatures (becuase I go to a variety of their branches), but in the process not one had mentioned that they ARE ONLY using the app and that the card that I was busy having filled by them was no longer useable. I was given the stickers with the usual smile and fantastic smoothie/juice. </p> <p>I very excitedly arrived at Kauai Kennelworth in Cape Town with my full loyalty card, to be told that my card is null and void. I was told that I must download the app. I asked where the signage is to tell me that because in all honsty that was the first time I had been told that. He insinuated that I knew better and was taking a chance. I was highly offended by that. He said it very loudly and made a bit of a scene in front of the other customers and I left there feeling extremely embarrassed. I have never had a bad experience, albeit service or the quality of the products, before and was a little taken by it. Please advise me on what to do with my current loyalty card, I have collected 11 stickers and one signature.</p>