Overnight delivery 6 days later??

I went to 3@1 who use courierit to send goods through between branches. firstly i paid the over night price expecting goods the next day. When i called to followup they said i had to call the cage to trace my goods as they could not find the store. I called the cage and gave details of another 3@1 store as the one i was given does not exist. Now courierit will not even call me to arrange anything. I then went to the 3@1 centurion to collect only to find courierit didn't deliver. When i use track my parcel it shows nothing has been done. Is this the customer service we must expect form them? Even when paying a higher rate for overnight docs that had to be delivered as they were urgent. its now how many days and no one has attempted to call and i still dont have my package. Nor would they call 3@1 to ask why there is no store anymore in the branch they sent the package to?