St Courier — Courier delivered in wrong address.

Sir, I booked my exam paper to chennai college, in st courier, jolarpettai.But the delivery people without even checking the address, delivered my paper to krishnagiri college.There is a very poor response .No one answers the calls or Noone is ready to provide the information .Tell me now who will deliver my exam paper to my college?.I accept that it is my mistake that I booked in this courier.