Shoddy Hi-Sense technical support

We bought my son a 120l Hi-sense deep freeze from Hifi Corporation in December which has just packed up and is still under guarantee. He contacted HiFi Corp who sent the complaint onto hi-sense for repairs. He has now been informed that it will take at least 7 days before a technician will be able to go out to his house to fix the deep freeze. This is unacceptable. What about all the food in the freezer that is going to go off?