McDonald's disappointing customer care.

I eagerly downloaded the McDonald's app that gives you great coupons and discounts and discovered that you can use it with the Mcdelivery app. I placed an order through Mcdelivery but before I checked out it allowed space for the coupon code from the McDonald's app. I went to the McDonald's app and pressed redeem and instead of giving me a code it created a timer and within 5 minutes went away. I phoned customer care that wasted 10 minutes of my time and R29 Airtime as I was being put on hold and transferred to departments who had no idea how to help because no one was "fami**** with how the app works" and to put the cherry on top, they had no idea on who I could contact for help. How can such a bug brand be so disorganized when it comes to customer care??? I am extremely annoyed at the fact that their own staff doesn't know anything about the brand they are working for. I spoke to about 5 different people and not 1 person could help? There isn't even instructions on how to use the apps and the contact section for the coupon app is blank. We are all better off using Mr Delivery because they at least have their **** in order.