Why in the world would you not assume this just for sake of an argument?? Is it not possible to have a family member active on the same forum???
Since you admitted in the OP that, it's like hard to tell who is who through proof because of anonymity. I don't see why you should expect members to just believe what you say.
We have had so many similar cases in the past of people speaking about their sons, daughters, fathers, mothers, uncles etc
First of all, my reason for ban is still not clear and this address copying I myself bring it.
I think the reasons are pretty clear. Perhaps you should be to see the message in your account about your ban.