1. I have track your parcel on multiple sites and they all are giving me this:
Destination Country - China: 86 20 11185 Go to official website
2016-08-17 12:32,"CAPETOWN d" has been exported,
2016-08-17 11:57,Leave the "CAPETOWN d",
2016-08-17 10:44,To "South Africa CAPETOWN d" Exchange Bureau,
2016-08-15 10:34,"South Africa" you've got mail,

Origin Country - South Africa: +(27) 0860 111 502 Go to official website [email protected]
2016-08-17 09:58,Comment, CAPEMAIL INTERNATIONAL (HUB),Insert item into bag Out
2016-08-16 11:36,In transit, CAPEMAIL (HUB)
2016-08-15 16:04,In transit, KUILS RIVER,Out of office
2016-08-15 08:34,Item accepted by branch, KUILS RIVER

2. Even 17 track is giving me this:
Number: CN037850751ZA
Package Status: Expired

Destination Country: China
2016-08-17 12:32 CAPETOWN d, have been exported directly
2016-08-17 11:57 CAPETOWN d, left
2016-08-17 10:44 South Africa CAPETOWN d, reaching Exchange Bureau
2016-08-15 10:34 South Africa has been accepted

Origin Country: South Africa
2016-08-17 09:58 CAPEMAIL INTERNATIONAL (HUB), Comment, Insert item into bag Out
2016-08-17 08:45 CAPEMAIL INTERNATIONAL (HUB), Comment, At Office of Exchange Out
2016-08-16 11:36 CAPEMAIL (HUB), In transit
2016-08-15 16:04 KUILS RIVER, In transit, Out of office
2016-08-15 08:34 KUILS RIVER, Item accepted by branch
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3. Your parcel is not in China, may I suggest you talk to South Africa Post to find out were is your parcel. They might be able to launch an investigation.

Hope this help.

Does this perhaps mean that my parcel is in Mexico? Do packages from South Africa usually go via Mexico to get to China?