Danone Yoghurt

Pick n Pay Noordheuwel refered me to the manufacturer Danone about the expiry date on the 1lt container. The consumer act says the retailer are not allowed to do this and they have to remove the product from their stores or resoleve the problem. And it is not my problem it is Pick n Pay problem. I do not buy from Danone SA. This problem I brought to their attention three months ago. They said they can not do anything about it. !!!!!!