OK. I contacted the neteller by calling and they said that they can not give my money back because it is my responsibility. They only give me a gold advice that I should not be transfer money to people who I do not know! Dear moderators, you can close the topic!
I will close my neteller account.
And my friends, I thank you all for your assistance...
You can close it youeself on the left side you will find the option to lock it.
Next time you know only use escrow and not trust anyone on the internet!