Defy fridge sound like an aeroplane starting up after 2 weeks

My fridge broke and i was in need of a new fridge.. I bought one from game as they always have the best offers and customer service. But now i cant get through to a game call centre. The fridge js not 2 weeks old and sound like it is starting up like an aeroplane it is a defy and wow i am very dissapointed. I have a special needs child who is a fussy eater and i sure as hell cant sit without a fridge. Please can anyone assist me. I need this fridge replaced as i really did not pay all this money for it to sound like this after 2 weeks?