Sends parcel to the right place, and then the wrong one

In December 2017 I placed an order from overseas which was sent in two different parcels via the post office. I received the first parcel at the end of February, and only this week I finally received a notification for the arrival of the second parcel. Today (29 March) I went to collect the parcel from the Bromhof post office in Johannesburg (where it should be), only to be told that it did arrive in Bromhof, but was sent to Durban on 22 March. HOW WAS THE PARCEL SENT TO THE RIGHT PLACE AND THEN MOVED AGAIN TO A COMPLETELY DIFFERENT PROVINCE AFTER THE COLLECTION NOTIFICATION WAS SENT TO MY HOUSE IN JOHANNESBURG??? The lady at the Bromhof post office was lovely and gave me a number to phone to sort this out. Too bad the number puts you on hold for 20 minutes until it finally cuts you off. Honestly, how is it possible to finally get something right (4 months later than it should have been done) and then manage to completely stuff it up? Tracking number rl ********** 66ch.