do you think is normal to block my account without any explanation of the reasons?
That depends on the reasons.
Seriously, it does. If you have 27 bogus accounts there then I'm surprised they are talking to you at all. If there was no provocation whatsoever and they just didn't like your birthday, or whatever, then maybe you've got reasons to grumble.
If you'd like us to dig into your case for you check out the Pitch-A-Bitch (PAB) service we offer:
here. Before you do file a PAB please make sure you read the
PAB FAQ and make sure you understand it because, among other things, it defines your responsibilities in the process.
I should warn you though: I am the guy that handles the PABs and I probably won't be too happy with auto-translated PAB details. In fact I'll likely ask you to get an English speaker to help you with your translation. Bet you never would have guessed that.
It's most likely a case of multi accounting anyway. Even in broken English the signs are all there.
Ah, now that's an assumption is it not? I understand where you're coming from but one should give the guy the benefit of the doubt. IMHO.