You lease a commercial property in Chicago for a retail business in a shopping center. You negotiated a 10-year lease with your landlord. For the last couple of years, you paid $100,000 a month along with about $10,000 in common area maintenance (CAM) fees. This month, though, you received a bill for $60,000 for CAM fees. But you cannot figure out why. You have enough cash flow to pay the bill, but you earmarked that money for some new fixtures. What recourse do you have?