HOW MUCH LONGER MUST I WAIT???

I PLACE AN ORDER *** IN DEC, MY ORDER WAS BOOKED OUT FOR DELIVERY ON 22/12/2015 TO HOWEVER MY ORDER WAS DISPATCHED AS A PART ORDER AS TO PARCELS ON THE SAME DAY UNDER ONE WAYBILL NO AND ONLY 1 PARCEL WAS RECEIVED. I HAVE BEEN CALLING CONSTANTLY SINCE 22/12/2015 TO RESOLVE THIS AND BLAME HAS BEEN PASSED FROM ONE COURIER COMPANY TO THE OTHER. AFTER PERSISTING IT WAS DISCOVERED LAST MONDAY, 28/12/2015 THAT THE SECOND PARCEL NEVER LEFT THE WAREHOUSE. ONE WOULD THINK THAT THE AMICABLE SOLUTION WOULD HAVE BEEN TO ARRANGE FOR URGENT DELIVERY BUT,WHEN I FOLLOWED UP ON WEDNESDAY, THE WAS NO PROGRESS. I HAVE BEEN PROMISED FEEDBACK FROM JALEELAH WHO TRIED CALLING ON WEDNESDAY AND NO FURTHER ATTEMPT WAS MADE. I CALLED IN THIS MORNING TO FOLLOW UP AND HAVE BEEN PROMISED THAT SOME ONE WOULD CALL ME BACK BUT YET AGAIN I AM STILL WAITING. I HAVE TRACKED THE STATUS ON LINE AND HAVE FOUND DELIVERY TO BE THE SAME AS 22/12/2015 AND A RETURN LOGGED ON 02/01/2016 WHICH I DID NOT REQUEST. I HAVE RECEIVED A REPLY VIA MAIL LAST WEEK STATING AWAITING FEEDBACK FROM COURIER BUT WHY WHEN THEY DID NOT RECEIVE IT? AND WHEN I CALLED IN TODAY WAS ADVISED THAT THEY WAITING FOR FEEDBACK FROM THE RETURNS TEAM?