Bad customer service

Hi i ordered a DEFY fridge online on the 27th of May and it was delivered on the 28th of May but on the 3rd of June i realise that it is making a strange sound it's like a buzz sound, then on the 4th of June when i opened the freezer my things were warm and defrosted and even the fridge where i put my vegetables was warm. So i called Makro on the 4th they said a technician will contact me so that he or she will come and see the problem, i've been waiting my things are getting spoiled and i know if i ask to replace my grocery on the fridge you won't do that. This fridge it does not have even 2 weeks but it has a problem i want the technician to contact me today or you can take your fridge and refund me please