Checkers Sixty60 is useless

I’ve been using Checkers Sixty60 for over a year. I’ve done some investigating and I’ve noticed that the additional 15% they add on top of your order total has never been refunded to me. Often they are out of stock for an item, but that money is also never refunded. This seems to me to be **** of sorts. I don’t have high hopes about getting my refunds, so I will just stop using the app. I advise others to do the same.