Very poor response from store manager

Visited Turffontein McDonald's yesterday morning to redeem one of the offers on the app. First they tell me I need to come in the store to redden as per managers instruction, I refuse and then manager retracts what she said to her staff and starts assisting me. Then I redeem the boerie hash brown with chips and OJ. I also order The cappuccino but im told the machine is not working. Get to pick up and leave. As I leave, I decide to check is my order is complete, my chips are not in the bag. I make a uturn and return to the store. I inform the guy at drive thru and he says I should drive thru go the window. When I get there he's manager Thabo tells me what's not what I ordered and there's nothing he can do about it. I'm very upset about this cis I'm not the one selecting the order on their pinpad, I specifically redeemed the meal that comes with chips and in the app the boerie hash brown comes with the chips and OJ. He realizes how upset I am and I'm running late so he tells the staff to give me the chips. Its not the first time I've received very Poor customer service at the McDonald's. There's no sense of urgency or appreciation for the customer. The main entrance of the McDonald's is literally a taxi rank, you have to fight with taxi drivers who have claimed the drive way as their own abd no one at McDonald's is doing anything to control this. Thus is the closest McDonald's to my home but it will be my last.