Chicken Express review: Drive through order

This evening I drove through and purchased order number Dr- T#329. It included a #2 combo 7 piece tenders with a side of cheese sticks and roll, and additionally 2 family sized mashed potatoes with a family size gravy. My total was $23.09.
I spent almost 15 minutes in line. Finally I got to the window. The woman at the window looked inside and then I was handed the bag that had my combo in a box and a bag with the extra sides. I noticed that the sack containing my sides was soft on the bottom and the woman who handed me the order said that the cheese sticks may have tipped over but everything was good. She said have a good day and started tapping her fingers and looking at the car behind me.
The car behind me honked and I pulled off. I saw inside the bag after I pulled out of line and saw that the bag was covered in my extra gravy! It was on top and the bag hadn't tipped over so that soft feeling had been gravy everywhere to begin with, she had handed it to me that way! There was no way she could not have seen and she had to have felt it otherwise why try the comment about cheese sticks?! I then looked at the box with my combo and saw the bottom was already soggy where the gravy leaked out the sack. I opened it up and I had a side of exactly 1 cheese stick. It reeked of fish as well. The chicken was okay. I was furious!
I looked at the line and it was backed up. The thought of waiting even longer to have someone else make a sloppy mess was infuriating so I left. This is my third trip to this restaurant where I have had crap service. Either items are missing or burned or I got someone else's order or a big fat mess! There is just no reason for so many mistakes. I have worked in food service and I know things go wrong but there are honest mistakes and there's just plain not giving a damn. I feel ripped off after an experience like this.