Poor quality milk sold at Pick n Pay Birchleigh

We purchased 12 litres of milk produced by Bosparadys on the 15 August 2019, the best before date is the 23 August 2019. The milk started curdling from the 19/08/2019. On the 20/08/2019 I contacted bosparadys and reported the bad milk, they said that they will call me back, need-less to say they never did. I contacted pnp customer care line, call centre agent said pnp would call me back and replace the milk. No call back and the milk bottles are expanding like it is going to explode. Today bosparadys does not want to answer their phones and pnp has no record of my call yesterday. So i logged another one today. Both my wife and i have gotten sick as a result of the consumption of the milk.