1. This is the full tracking of your parcel:
Parcel No.RF258457041CN tracking result
2016-05-25 15:03:51.0 Electronic Data Received
2016-05-28 14:16:29.0 parcel center received
2016-05-28 21:18:30.0 parcel center customs scan
2016-05-28 23:34:26.0 leaving parcel center ，next station Shenzhen center
2016-05-29 00:35:50.0 Shenzhen Transit Station export security scan
2016-05-29 12:04:07.0 Shenzhen Transit Station export customs cleared
2016-05-30 20:33:00.0 arrive Guangzhou Airport
2016-05-30 20:40:49.0 leaving Guangzhou Airport going to next airport/seaport
2016-06-01 12:24:27.0 Shenzhen Transit Station export security scan
2016-06-01 15:26:42.0 Shenzhen Transit Station export customs cleared
2016-06-02 19:32:00.0 arrive Guangzhou Airport
2016-06-02 19:51:11.0 leaving Guangzhou Airport going to next airport/seaport
2016-06-05 10:11:29.0 Shenzhen Transit Station export security scan
2016-06-05 10:49:49.0 Shenzhen Transit Station export security scan
2016-06-05 11:55:39.0 Shenzhen Transit Station export customs cleared
2016-06-06 20:41:00.0 arrive Guangzhou Airport
2016-06-06 20:49:09.0 leaving Guangzhou Airport going to next airport/seaport
2016-06-08 12:38:34.0 Shenzhen Transit Station export security scan
2016-06-08 12:53:22.0 Shenzhen Transit Station import customs cleared (domestic transit )

2. I don't think your parcel ever was shipped out of China. You should contact seller and give him the above tracking and tell him you have not received the parcel.

Hope this help.