Makro always out of stock when shopping Online

I am having a challenge with Makro and Makro Online as a whole. Every month when I purchase essentials I always get an email about my order changing due to no stock on a few items and that I will be refunded. It's an every month thing that I expect from Makro Online. Now this month I am trying to purchase but everything is out of stock. From baby essentials to food essentials. Oils, sugars, washing powders, nappies. It's like looking at everything that you need that are on special is sold out and who knows when Makro will restock these things as specials eventually end. I tried contacting them via the app and via email but to no avail. The email bounced back and the app didn't want to submit the form, I then went to chat and was ignored. The Makro that does my online shopping is Wonderboom so I am unsure if Wonderboom is the problem or it's the Makro Online. It's really awful this month even though every month when I buy certain things on special I never get them, I get refunded and have to go elsewhere and buy. Please can head office see what is going on as I have been checking for 4 days now and there's no restock or change. Is it a supplier issue on all of these things?