Late Delivery and wrong sizes

Placed and paid an online order on Thursday (23.06.2015) got a shipped email on Friday, which i was suppose to receive the Monday but only got it today (01.07.2015) firstly the courier company they used Dawn Wing never bothered calling me for directions just kept on carrying it over to the following day, as per the tracker it was out on delivery Monday morning 6am already. I checked my items and 2 of it was sized wrong, the one was a small instead of a xxl and a pair of boots sized 2 for a toddler instead of an infant. I called the call centre to simply ask them to come and collect and replace with the correct sizes, this is when the consultant Reagan or Keagan said that the fault lies with me when placing the order, I then went online while I'm still on the phone with him went to the infant section where i first saw the boot with the same barcode and still he insist that i chose the wrong item as well as the jersey. All i want for Mr Price to come and collect and replace with correct sizes, I'm not using my time to go and exchange it at a store, that's my main reason why i shop online to avoid ques.