No feedback on defected goods

Dear Makro. I purchased a Hisense fridge in August this year. The ice maker is no longer working. I have logged a complaint twice with your customer service department who assured me that I will receive a call to book a service call out. This has not happened. I have subsequently reviewed the CPA act. That clearly stats defected good can be returned, replaced or refunded within 6 month. I would like my full refund please. I am no longer interested in having this fridge fixed. Please contact me regaing the below or else I would be forced to go to the ombudsman.