Undelivered goods

Ordered Stadio text books with wize books on the 5th and they use dsv as their courier company. From Friday the 7th they said the books, student cars and t-shirt was on route to customer but nothing was delivered, on Monday the 10th they sent a text saying my order was delivered successfully but they did not deliver at all. We've been calling them every they hang up on us or say they would deliver the next but until this day I haven't received my order and I'm missing out on my studies.