Bad service

I purchased a matching upright fridge and freezer defy set, anf since day one the freezer had been exchanged on 2 occasions due to it being faulty. I now have the same issue, Defy has sent out 2 technician and they have now decided to exchange the unit again. I refuse as obviously havinv had 3 faulty unit I dont trust the brand anymore. They now only want to refund the freezer as the fridge is fine. The units were bought as a set how do match another brand of freezer to complete the set.

In terms CPA the fridge now becomes unsuitable for its purpose as it is meant to a part of the set.

One a previous occasion, I had incurred. Loss of of food contents which they refused to take responsibility for and are now forcing me to keep something thaf is unsuitable due to other part of the set being faulty.

This is in contravention with sections 55 and 56 of the CPA.