Hi,
Has anyone suffered his account being blocked by exchange.blockchain.com?
No, never used their exchange.
I asked for the reason but they (support) say they are not allowed.
Never heard that before. The support should let you know the reason why your account is frozen, no matter what the matter is. You should keep pinging them and tell them that you have funds in your account that you need, and if they are not willing to let you have the funds, they should at least let you know why you were blocked.
Any chances of getting my funds back?
Isn´t this illegal?
![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
There is no other way unless you convince them to let you withdraw your money from the account.
And the legality of their actions depends on the laws within your country. If you have actually violated their T&Cs, then there is nothing illegal about that, but if there is something unclear or a misunderstanding, then maybe you can take some legal action if your country supports that.