Brake Electric Antilock problems of the 2007 Jeep Compass

The contact owns a 2007 Jeep Compass. The contact stated he is having problems with his abs. When he presses on his brakes there is a clicking noise. It seems as if the vehicle is not going to stop at times. He also stated that his seat belt is not working properly either. When he goes to put it on it will click like it's on but it will then come undone on it's own. The contact has taken the vehicle to the dealer but they told him nothing is wrong with the vehicle. The failure mileage was 35,000 the current mileage is 110,000.