Sonic Drive-In complaint: Bag full of grease

Monday night after my grandsons basketball practice we went to the Sonic to get a quick late meal. We ordered 1 chocolate shake 2 corn dogs and 1 large tutor tot. We got the order and left for home . I live about 4 miles or so away. When we got home my grandson picked up the sack of food next to him in the front seat and I noticed what looked like a large wet spot. I asked if he knew what it was and he did not. Then we went inside and after we were in the light my grandson said look this bag is gease soaked that’s what made the spot. And he was right. Now I have to put a towel in the seat so whoever is in there will not ruin their clothes. I called Malakoff Sonic spoke to a man named Anothy. He offered me a cup of decreases. I told him I did not think that was suitable compensation and his tone changed and he became rude. Was totally not necessary. I was polite the whole time. After he displayed his immaturity I decided it was best to speak to his higher ups.