Parcel Non- Delivery

I posted 3 parcels at WESTVILLE POST OFFICE on 28th APRIL 2015 for delivery to the UNITED KINGDOM. 2 of the parcels have been received. The 3rd NOT. RECEIVED at it's destination in the U.K. I have tried to trace it via the tracking number (CN***ZA) and all it tells me is that the parcel was received on 28th APRIL. NOTHING ELSE!!<br> I have lodged an enquiry to locate the parcel on 5th JUNE. It took till the 15th to even reflect as having been lodged. Now the telephone number that was assisting me ()31) *** attention LILLY, seems to have VANISHED as well. I can't dial that number after being able to so do till a few days ago!!!<br> I need to get some answers to the whereabouts of this parcel. It's not of great value (approx. R550 ) but makes one aware that the post office deliveries can't be depended on to deliver as promised. With 2 children domiciled in the UK sending goods by courier becomes prohibitively expensive if done on a regular basis. There seems little point is using the S.A. Post Office if deliveries can't be expedited as requested.<br> PLEASE CAN YOU HELP FIND MY PARCEL.