MY FRIDGE IS 3YEARS OLD

Question

MY FRIDGE IS 3YEARS OLD AND IT DOES NOT COOL EITHER FRIDGE NOR FREEZER,I HAD A REPAIR MAN COME BY AND HE SAID THAT THEIR WAS A POSSIBLE LEAK IN FRIDGE WALLS,DOES THAT SOUND POSSIBLE,COMPRESSOR WORKS,FANS WOKS,COMPUTER WORK,BUT NOTHING COOLS