Fridge

I bought a fridge 4 months ago and it started making an unpleasent disturbing noise. I logged a call with Hifi corporation at Easgtate brach where i bought the fridge. The Technician came to site three differnt times and could not resolve the problem or fault. I called Hifi corporation and defy on the 13th JAnuary 2020. I am being taken to and fro. I really need the fridge to be replaced however im not getting the assistance and satisfaction i am looking for.