Misleading advertising

I had purchased 2 Design Collection BLOCKOUT curtains online. Received the items, yesterday (19/03/24). As soon as it came, we opened the one curtain, took it out of its package and realized that it was **** advertising. The curtain was not a blockout curtain, not even lined. I called the call center immediately to complain and this is false advertising and I am not happy. I told the consultant that I had opened the one and only afterwards realized that it is not what the description online had said. She advised me to take pictures and send them through. I told her, that since it is opened, I will put it on the rod next to the other Design Collection Blockout curtains that I had previously purchased, so that she can see in the pictures that the curtain was see through. She said that is fine. That I must then put it back in the box and not open the other one. I took all the pictures and even the pictures of the packaging to show that the description on the Makro website is false and misleading, as the curtains are not Blockout at all. I was given a reference number and email address to send the pictures to. Today I get a call and the consultant advises me that they can not return or exchange the curtains as they are used. I can’t understand how it is used. I will never be purchasing anything with Makro again. I am truly disgusted with Makro’s misleading information online. Now I am stuck with items that I can’t even use.