Faulty fridge and bad serviccec

We bought two KIC Fridges on Sunday 29/07/2018. When we plugged in the fridges, the one fridge had no light. We called the Monday 31/07/2018 to tell them the light socket is faulty. They said that they will send a technician to fix. I have phoned them at least two or three times in the meantime and every time they say they will send the technician. They also said there is a 48 hours turn around time, which has long expired. I still have not heard anything from them, yet they said they will phone back and let me know. This is very bad service. I feel the I bought two fridges cash, and this is the service I get. Please sort this out ASAP.