Ennerdale kfc

I bought a family treat (8 pieces) and a 1.5-litre Coke at the drive-thru. I waited for more than an hour. They told me to park in front of Cashbuild. While waiting, I noticed that people who ordered after me were receiving their meals. After a very long wait, I went back, and they were not even aware that I had not received my meal. What is the point of a drive-thru if they make us wait