Makro Riversands / Expired Goods

I purchased a 6- Pack of M branded long-life milk at Makro Riversands on the 18th of January. The milk was set to expire in March I think however all cartons had coagulated. My 7 year old daughter had a sore tummy from making herself cereal in my absence. I escalated this to their customer service department. I still have not received any feedback from them other than an acknowledgment of reciept of my complaint. I escalated from Twitter to their actual Customer Service department. When do I get feedback regarding this????