Expired Goods

I went to Spar Midrand by the taxi rank today and purchased a few items amongst them was a C***** yoghurt and packet of biscuits. Luckily I saw the best before date of 29 Jan 2016 on the packet of biscuits and I left it behind. Unfortunately I didnt see the yoghurt and only saw best before date of 19 Feb 2016 when I was at home. I am dissapointed on Spar Midrand service as I am a regular customer. So all along I have been buying expired goods. For the sake of my health I wont be purchasing any items until this is sorted out. Can Spar Management look into this because we paying for this goods. We are not getting them for free.