Interesting article this morning. https://www.stuff.co.nz/nz-news/360601970/two-paknsave-supermarkets-facing-charges-misleading-customers

I did this the first time and y'all did nothing. Seller then blocked me. Second time I just said refund and bought it on ebay. A deal is a deal, except on TradeMe from my experience.

It's advertising discount for multiple items and then reneging on the discount.