Hi,can anyone advise.my indesit ca55xx fridge freezer (fridge part) is not getting cold.a few days ago the freezer decided to defrost itself (fridge was fine) anyway I turned it off and let it defrost for 24 hours,cleaned it out and then turned it back on.the freezer seems to be working fine but the fridge is not getting cold.it is only 4 years old.thanks