Lying about a parcel that's probably missing!!

I sent out a order for one of my clients last week Monday the 11th October to be delivered to a Pudo locker in Secunda. On Wednesday it came to light the they deposited the parcel in the wrong locker and will deliver it to my clients residence the next working day. Today is the 17th October and no one has even called her to ask if they can deliver. They have been asking for her address since last week but nothing is happening. Someone contacted me earlier saying he spoke to his regional manager to sort out the issue and it will be done and delivered to her today but they have still not contacted her to deliver the parcel, now he is ignoring my messages. All I want them to know is this, if that parcel is lost, COURIER GUY IS GOING TO **** BRICKS!!! YOU ARW GOING TO PAY MY CLIENT AND ME FOR WHAT THE PARCEL WAS WORTH, I WANT ****ING ANSWERS ASAP!!!!!!!