Below are the website feedback forms for the main supermarkets. Please consider putting in a feedback form to the supermarket of your choice or all so they have a formal notification that you want Ski yoghurt back.

Woolworths: https://www.woolworths.com.au/shop/page/help-and-support-faq?faq_id=40

Coles:
https://www.coles.com.au/customer-service/contact-us

Foodland: https://www.foodlandsa.com.au/contact/

IGA: https://www.iga.com.au/contact-us/

Metcash: https://www.metcash.com/contact/