Plain Yoghurt not \Plain\"- smells and taste is off"

Good day<br> <br> On Sunday 28 February 2016 I bought Crystal Valley Low Fat Plain Yoghurt at Checkers St Johns in Pinetown. I opened it on Monday morning 29 February. The yoghurt has small fruit pieces and is very sweet for a plain yoghurt. It also smells and tastes off. <br> <br> I am a regular consumer of crystal valley plain yoghurt and has never encountered this, hence it was easy to taste and smell the difference from what I'm used to consuming.<br> <br> Your help is much appreciated.<br> <br> Nokwanda Jali