NON-DELIVERY AND NO COMMUNICATION

I HAVE BEEN EXPECTING MY PARCEL SINCE THE 5TH OF DECEMBER BUT STILL NO DELIVERY AND EVERY MORNING I GET A MEESSAGE THAT MY PARCEL COULD NOT BE DELIVERED, THE LAST TIME I GOT A CALL FROM THEM WAS THE 5TH of DECEMBER WHICH SHOWS THAT THEY HAVE MY RIGHT CONTACT DETAILS BUT. THIS MORNING I GOT A MESSAGE AGAIN THAT MY PARCEL COULD NOT BE DELIVERED, HOW WHEN I DID NOT GET A CALL