What you see on the electronic menu may not always be what you get at two McDonald’s franchises located inside Chicago’s O’Hare International Airport, according to a new lawsuit that claims the fast food spots are overcharging customers, sometimes by as much as 30%.

A Kansas woman is the lead plaintiff in a complaint filed this week in Cook County Circuit Court, that accuses two franchises of hiking prices, Courthouse News reports. There are a total of seven McDonald’s locations operating within the airport, according to this official map.

A Kansas woman is the lead plaintiff in a complaint filed this week in Cook County Circuit Court, that accuses two franchises of hiking prices, Courthouse News reports. There are a total of seven McDonald’s locations operating within the airport.

According to her lawsuit, she was at the airport last month on a layover, and ordered breakfast. The total come to more than what was posted on the menu board, but when the woman asked about the discrepancy, the cashier allegedly said the board prices were incorrect.

She chose different items but again, the price was more than what the menu said. She claims the cashier tried to shame her into paying the added cost, and conceded eventually “that the advertised prices had been wrong for some time, and that neither she nor a McDonald’s manager would alter or lower the price of the order to adhere to the price advertised,” the lawsuit alleges.

The customer said she finally went with a steak and egg McMuffin meal, which was advertised at $4.80 but for which she paid $6.20.

When she took her issue to the company and filed a complaint, she says she only got a “nondescript response” saying the company would investigate her concerns.

Her attorney says he investigated prices at two locations and found similar overcharges.

According to her complaint, the menu board could easily be reprogrammed.

“McDonald’s IT department, as one of the largest restaurant businesses in the world, could also, on information and belief, adjust and synchronize pricing issues on its own computerized cash registers and menus in a minimal amount of time,” the lawsuit states.

Would You Like Some Scam on Your Big Mac? [Courthouse News]

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