Frustrated and Angry

I dont know where to begin. This has happened to me twice now. I bought gifts but it never reached me. Order ********** 4 from BusinessWize, Hennie is the name. This purchase was done in June and an entire month later it has not reached my sister. He sent the parcel twice to the wrong address, further advising me that it is my problem. The buyer protection programme is also **** because i am not protected. They cant help me. This man is sitting with my parcel and refuse to refund me or send it to the correct address. Order ********** 2. Nihav001 from Samantha Lazarus an order that took place 2 years ago. I have been in constant communication with her and the post office advised me that the parcel was sent back to her but she does not acknowledge it. I want my money back. I am frustrated and angry and really cant fathem how people can do this.