A company in Phoenix, Arizona during the 1970's was shut off from the Mexican market because they refused to give pay-offs to Mexican government officials. Something remarkable happened, however. The company's ethical behavior in refusing the pay-offs increased its stature in the eyes of some Mexican business people. Impressed by an American business that was bold enough to go against the system, a group of influential Mexicans lobbied the Mexican government to allow the company to open two Mexican dealerships. They are doing a booming business. One reason is that people know they can trust them.
What is true on the corporate level is true on the personal level. It pays to be a person of integrity. It may not appear so at times, but just hang in there. Sooner or later time will expose the person who cheats.