SHOCKING ERVICE AND LACK OF RESPONSIBILITY

My shipment arrived on Sunday and i phoned in on Monday to find out what was happening, only then did a lady called Jabhile Mbatha email me an invoice to pay even though my contact number was available for them to contact me and advise. i made the payment immediately, 4 DAYS LATER, I called in to find out what was happening with my shipment, nothing has been done and they start to ask for payment which i already made on MONDAY. Such LACK OF RESPONSIBILITY OF ITS STAFF FOR AN INTERNATIONAL ORGANIZATION IS APPALLING. UP TO NOW, I HAVE NOT RECEIVED MY PARCEL