Orange Grove Dairy

I purchased 2 x 2L Orange Grove Dairy Milk inDecember 2021. I called in to complain that the milk has turned bad on 29.12.2021 although the expiry date was 30.12.2021. I was told that someone will come in to fetch the milk and replace it. I was asked to keep the rotten milk in my fridge until someone comes in. I called on several occasions during the past 2 weeks and nothinghas transpired to date. How does Orange Grove Dairy expect me too keep the milk for so long, knowing it is gone bad?? This is unacceptable coming from a well known brand.