1. This is the tracking of your parcel:
Number: RR861651395PL
Package Status: Pick Up
Destination Country: China
2016-10-20 19:02 Post Hung Lai, throw
2016-10-20 08:10 Post Hung Lai, is posted
2016-10-19 18:56 Post Hung Lai, throw
2016-10-19 08:30 Post Hung Lai, is posted
2016-10-18 18:21 Post Hung Lai, throw
2016-10-18 09:52 Post Hung Lai, is posted
2016-10-17 19:14 Post Hung Lai, throw
2016-10-17 11:59 Post Hung Lai, is posted
2016-10-17 11:36 Post Hung Lai, reached the post Bureau
2016-10-15 12:52 The Shenzhen Exchange Bureau, import each other (internal transit)
2016-10-15 09:14 The Shenzhen Exchange Bureau, import opening
2016-10-10 14:54 Beijing Exchange Bureau, import each other (internal transit)
2016-10-10 08:40 Exchange Bureau in Beijing, has imported opening
2016-10-06 13:05 In Warsaw, has been exported
2016-10-06 11:40 Warsaw, leaving
2016-10-04 17:52 Poland, accept
Origin Country: Poland
2016-10-10 10:40 BEIJING TRANSIT, Package acceptance
2016-10-06 11:40 WER Warszawa, Package sent from Poland
2016-10-04 17:52 UP Pleszew 1, Item posting
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2. The parcel is ready to be pick up by the recipient at the post Office. He could call China Post Hot Line: 11185, either to have the parcel deliver or pick up. If he does nothing, eventually the parcel will come back to you.

3. You should ask your supplier why he does not want your parcel!!!!!

Hope this help.