Takealot misled me with delivery date

I ordered spark plugs from Takealot on the 18th of March because I couldnt find them in local spares shop. At checkout it said the expected delivery date is 03 April. After I've paid it changed to 14 April. I was duped into paying for something that could take forever to arrive. Yet in their website they say shipment takes 5 to 7 working days. In my case, it's gonna take 26 days. This is the number of days that a person waits when buying a product overseas. I tried to cancel so that I could buy these plugs from BossAuto Spares but there no option for cancelation. My car is gonna sit idle for the whole month because of takealot. These guys will lose customers once Amazon open their shop here. They're unprofessional and take forever to do one simple thing.