Misleading online listing, strange customer support?

Tried to order an office chair online last week. When adding to cart and trying to check out, I get an error message "To heavy, remove item". Cannot move to locker, or nearest store as an option. But it is "Available online only"?!? How can a massive company like Makro advertise items on their site that can ONLY be ordered online, but cannot be delivered?!? Then how am I supposed to get the item then? Does not make sense at all. I am willing to drive the 100km to PE and pick it up, but not even that is possible. Contacted customer support, who only got back to me a week later with what seems to be a standard "Item is out of stock", but the chair is STILL listed on the site? Same for the same, more expensive one, in leather. So still falsely advertising items they cannot deliver? Surely that should then be indicated or the item removed completely? I needed this specific chair quite urgently, but guess I am sheer out of luck.