Disgusted in Starbucks

I am absolutely disgusted with Starbucks. I was always a devoted Seattle Coffee Company customer but Starbucks offered some wonderful offers on their App and so I decided to use their services instead. I downloaded the App, paid money into it and eventually qualified for 4 free beverages. On Friday I was informed that the App is no longer functional as they have installed a new system and I lose the money I have in it as well as my free beverages!!!!! This is theft pure and simple. I have R52 still on my App which is money I paid in. Starbucks knew well in advance that they were changing systems and should have notified customers so that we could use our money and free points.