URGENT - FRIDGE TRIPS ELECTRICITY

I bought a Hi-Sense fridge from in 2014, a few months later I called to report that the fridge keeps tripping my electricity. Every day in the early hours of the morning the electricity trips due to the fridge, we have tried the fridge in different wall sockets in the house and the same problem occurs. A Technician from Hi-Sense was sent out and he detected there was nothing wrong with the fridge. I reported the matter again as the same thing started to happen a few weeks ago. On Thursday 18 June 2015 I reported the fault again and called the store now again as the Technician called yesterday 22 June 2015 to say that he was on his way to my house, the store informed me that they have been trying to contact the Technician whole day to no avail. This is a huge inconvenience for me as I now have to have someone be at my house in case he arrives and he just doesn't seem to show up.How may times must I now report this matter before you give me a different product? Must my house now first burn down due a electricity shortage/faulty product?I AM NOT HAPPY!!! THE STAFF STAFF ARE ALL SO FRIENDLY AND HELPFUL WHEN YOU BUY BUT WHEN THERE'S PROBLEMS WITH THE PRODUCTS THEN YOU DONT GET THE SAME?