Poor customer service

I ordered food on McDonald's app yesterday while at McDonalds Bara, I waited for 45 minutes for the food while I was busy checking up on my ordered only to be told 45 minutes later that my order is in Southgate drive-thru as per location and I should go collect it there. I place my order while inside the restaurant so how did it end up in Southgate and now I paid for the food that I did not recieve and staff members were not helpful either.