I have never seen any shopping mall or business that does not allow consumers to bargain, they just refuse to bargain with us and they have the right to do so.
Of course there are stores that have fixed prices to their products and you cannot bargain. In my country, the most places where you can easily bargain a product being it a foodstuff or any other kind of product like clothing, is usually in the market. Then few stores around the town. Malls and Supermarkets will have a fixed price tag to their products at all time so you cannot bargain. Instead what I am always advocating for is for government to find a way to regulate the prices of these products and commodities within the marketplaces, the shops, malls and supermarkets.