Defy fridges and freezers are unreliable

I recently purchased a new side by side fridge freezer unit, that was non functional from the moment I plugged it in. The freezer warms up to well above 37 and the fridge compartment stays at room temperature. Defy have sent technicians out to regas the unit and now want to do so a third time while it is obvious that this unit has a bigger problem. When I ask for a warrantee replacement I get a standard "it will be escalated and you will be contacted" , but I hear nothing from them if I don't phone them. I think it is rediculous to partly more than R10 000 for a non functional freezer-fridge unit that is non functional. And then receive the worst cafter purchase support I have ever experienced, It has been 2 weeks since the purchase, and I am unable to store any food in what I thought would be a new functioning side by side fridge freezer. If this is the kind of service you can expect from defy they should really remove their "you can rely on defy" campaign and replace it with the truth about how their service will disgust you, and leave you wanting more.