Mould inside sealed yoghurt 1k tub

<p>I have sent a message on the Danone Sa site no reply. I bought a 1kg Danone Nutriday fruit yoghurt (mixed berry) on the 30th of April and opened it on the 5th of May (expiry date 17 May). When I opened it it had mould in it. I am very disappointed in this product and am very scared to buy this product again. </p>