Parmalat custard runny and smelling

I bought the Parmalat Custard today at Spar Zevenwacht with an expiry date 21/01/2021. As I opened the carton it was watery with a terrible smell. Im so disappointed as this was my favourite custard and I will NEVER buy it again cause clearly Parmalat does not check their products after manufacturing them. Next time please do Quality checks on your custards to avoid your customers having food poisoning. Hoping to receive a response on this matter.