Incorrect delivery and bad service

I placed an order online on Saturday (27th), after 3 hours I called and the shop had not yet accepted the order. After the call centre had contacted the shop they eventually accepted the order and it was delivered, only to find the wrong products had been delivered.

I called the the call centre, they said they need to send a driver to pick up the wrong the parcel, which he did, only for the pick n pay to turn him away. So he had to the deliver the same incorrect package back to me on saturday night. Now im sitting two days later with the wrong package still waiting for pick n pay to come pick this parcel up, I have been phoning every day , and all the call centre can tell me is they have sent a message to the pick n pay.

I'm sorry but I don't think pick n pay should offer a delivery service if they have no idea how to do it or rectify situations where they make mistakes.