Culver's of South Elgin

Love the food, my sister and i bought cheese burger meal and the meal came with a voucher that gave you a free scoop of ice cream. My sister got chocolate with snickers topping. Then i ordered vanilla with oreo topping, the lady said i have to charge you 90 cents extra. I know it was free but the point is that, they need to be consistent with their voucher. Other than that my meal was great.