Defy and Makro failing to resolve the broken fridge issue they sold to us

I bought a chest freezer from Makro in December it was broken before 6th month they sent someone to fix a few days later it broke again .We have made efforts to get this issue resolved to no luck.They take their sweet time to resolve and when this fridge broke it cost us money because the meat we had in it went bad and had to be thrown away.This is unacceptable.Very unhappy abt such a service.Got this email on the 5th of august Kindly be advised that we have re-booked your service request of your defective DEFY 195L CHEST FREEZER WHITE, Suppliers promised to revert to you in 2 to 3 working days.But no solution

got this one again

dly be advised that we have re-booked your service request of your defective DEFY 195L CHEST FREEZER WHITE, Suppliers promised to revert to you in 2 to 3 working days. You can also call them on *** with ref *** they will further assist.

still nothing

I need this fridge replaced or a refund urgently