A delivery that was meant to be within 3 days will now be 3 months

I placed an order on takealot onthe 18th of July for 4 chairs that were on stock and made payment immediately, I then received a confirmation email stating the delivery date which was July 21st but when I track my order it says that delivery will be October 20th and I cannot wait that long If that’s the case I want my money back ASAP