ROCK SPRING/INTERSHU MAKING USE OF *********** DPD LASER COURIER

I bought shoes from Rock Spring and Intershu online makes use of DPD Laser ( Dawn Wing Couriers ). After three SMS's on different dates, Dawn Wing still failed to deliver my parcel. My email to Rock Spring as well as a different email to Intershu to point out this incompetence and a plea for assistance to have my parcel delivered, brought to response. Is Rock Spring/Intershu as *********** ?