No assistance from Post Office customer service

The following packaged from China arrived at JHB International as follows: (1) YC***YW Destination Country South Africa: 2015-11-22 00:00,South Africa Arrive at South Africa Airport-(Yanwen's Track End), (2) YC***YW Destination Country - South Africa: 2015-12-05 00:00,South Africa Arrive at South Africa Airport-(Yanwen's Track End), (3) YC***YW Destination Country - South Africa: 2015-12-09 00:00,South Africa Arrive at South Africa Airport-(Yanwen's Track EndYC***, (4) YW Destination Country - South Africa: 2015-12-15 00:00,South Africa Arrive at South Africa Airport-(Yanwen's Track End). The SA Post Office customer care merely states in an email that they do not have record thereof. All international tracking websites clearly indicate that it had indeed arrived at JHB on the aforementioned dates.