Appalling service from online clothing shopping at Woolworths

Good day We are terribly disappointed in the appalling service that we have received from online clothing shopping at Woolworths. We placed an order on the 6th May. We ordered 13 items of clothing. When we ordered the clothing, everything that we asked for was in stock with the correct sizes for our children's winter clothing and pyjamas. Initially the order was meant to be delivered between the 19th and 21st May. When we track the order, it says it is out for delivery. We have still not received our order. When we were invoiced only 6 of the 13 items are now available. This is completely opposite to the service that we usually receive from Woolworths.