Appalled and Shocked at Pick n Pay

I am absolutely appalled and shocked at Pick n Pay and their customer service. I have what I believe to be a serious matter with regards to personal safety. I've called their customer service department and also emailed them but have had no correspondence. I purchased a flask from the Chatsworth Branch and used it for 3 days. On the 4th day whilst filling coffee into the flask, it exploded on my wifes face......literally exoded!!! I mean is this the type of products that Pick n Pay sells and is this the type of measures that someone needs to go to in order to try and get some correspondence from them so that we can make sure that it does not happen to anyone else? Imagine if this happened to your spouse or worst your child. We really need to be vigilant about where we choose to shop and what products we buy in future. Its clear the direction Pick n Pay has chosen to go it seems.