Shut down Macdonald northmead

Utterly disgusted with the service i received today at Macdonald's northmead. I get that the branch i fairly new but the least they could do was hire competent employees. I recently downloaded the app and there was a code I could use to redeem a complementary meal. I walked inside the branch and asked for help in redeeming the code instead I was provided with the most useless human being I've met in my life...she took long to assist me to a point where the code I redeemed timed out I accepted the mishap and just requested that I order the meal I came to get seeing as there was no way to retrieve the code again and to my surprise I was advised to utilize the self service machine. Where is the customer service in all of this because firstly I asked for help but was given a cabbage to assist me then furthermore the same cabbage could not even assist me with my order but directed me to a self service machine. I don't understand how a big brand like Macdonald is fine with having *********** employees to represent their brand like this. If I had the power I would have the branch shut down and request that all employees undergo training to avoid this from happening to the next customer who has no idea on how to redeem all of the wonderful items provided on the app. I couldn't even stomach my food due to the appalling service I received today I would not recommend anyone to waste their time at Macdonald northmead until such a time where all customers receive the service they deserve.