Disabled account

I've registered new booking account, got agreement for the account on email, but when trying to sign in I've got respond "Account disabled
This account has been disabled for security reasons. Please contact Customer Service if you believe this to be an error".
It's happend the same when I created an account for someone else of their object.
Local Customer Service (22489200) doesn't have an idea what is the reason and can't help to solve the problem.
How to get a reasonable quick help?