Poor service delivery!

I recently registered with Damelin, I was told that my books will be dispatched to me WITHIN 21 working days from day of registration (2 July 2015), day 24 I still had not received my books as yet. On 11 August 2015, (29 DAYS LATER) I received my books, PACKAGE WAS DELIVERED OPENED. my receptionist signed for it non the wiser. 2 of my books are missing, the people assisting me take there time to get back to me. it is pretty simple, 2 of my books are missing from the open parcel sent to me, send the 2 missing books to me? All I hear, when I hear from the student advisor, is that feedback is awaited, meanwhile time just keeps ticking away... it has been 8 days since I notified Damelin about my 2 missing books from the open package delivered to me, why is this issue being prolonged?