Inferior products/bad service

I purchased a KIC fridge which was extremely noisy so had it swapped out by the supplier. The new one was also noisy but not to the same extent. I put in 3 complaints and had technicians out twice, Both times saying it was an inferior product and the noise was normal. Not buying this my wife contacted Whirlpool direct and was promised a manager would contact her. 2 weeks later no response. This fridge wakes us at night as the compressor runs for approx 45 minutes to cool the fridge then cuts out for only approx 15 minutes. To me this is the wrong way around suggesting the fridge is not holding the cold air. It also does not get as cold as it should. Is this just the state of local products and service that we now have to put up with?