My Mysterious Package Misdelivered in Germany by DHL

I sent my package with the tracking number CP102081804TR from the PTT Sincan central branch to Germany, but it was sent to a different address with an unknown postal code and to people I've never heard of. How could my package, which DHL sent from Turkey to Germany, end up in a completely different place? My postal code is 89584, but my package was sent to 88400, where I don't know anyone. My recipient in Germany is having trouble with DHL, and I don't know what will happen to my 8-kilo package. I want to know what happened, and whoever did it will have to answer for it. I need your help right away to solve this problem.