Extreme bad service from OneCart Makro

So Few days ago I ordered products from Makro SA through OneCart . Later was told one of the products was wrongly priced, which I understand could be typing error. My position is as a customer I cannot be held liable for that error, I should get my product as I ordered and paid for it. As a customer I paid what I saw, they instead tried to offer me an imitation product or a refund but I do not want a refund, my product is available Instore and should therefore be delivered. I thank you as I wait in anticipation to reach a mutual consensus with Onecart Sa.i wrote numerous correspondences to them and still no assistance, am still puzzled by their attitude, like zero concerns absolutely no compassion, still today on their website the product still is priced like that thry refuse to correct it on their website, Why? ? Is it their marketing strategy trying to lure us into buying them be forced to take a substitute which is way different to the product?