Companies really hate when their consumers know their rights, which one customer used to their advantage when they needed a rental car . As the customer, you're subject to a company's rules the moment you sign a contract. But if you just follow that contract to the letter, following all the rules, there's nothing the company can do to stop you. One poster shared this experience to r/MaliciousCompliance, one car rental company tried to screw him over after renting a car for five weeks. They need…