Delivery charge and no delivery within provided time frame

I placed an order on the 22nd November on the Dion Wired website for a product which cost R60 extra delivery cost for standard 3 to 5 working days delivery. I tried contacting them on the 29th November to confirm where the product was as no contact was made regarding delivery as yet, I was unable to get through to the customer care line for online sales , so I sent an email and regarding my query, I still haven't received any response regarding my package via email. I made another call last week and finally got through to the online support centre only to be advised that I would have to wait until Monday the 11th or Tuesday the 12 of December the latest as they are having issues with their courier, no phone call or anything received yesterday regarding my delivery , I tried contacting the online service centre again today and unable to get through for half an hour during working hours to try and find out where my package it. This is disgusting service, I refuse to pay for delivery for something that has not been adhered to according to the delivery policy.