in fact they do not send any calls to the telephone number or any text messages to validate the withdrawal
They have never responded to the emails I send every day and in the chat they always write that the operators are busy
Wait, I am not sure I understand this part correctly. You're actively in chat with them? And whenever you told them that you can't verify [or other reason] they write that the operators are busy? If you happen to be in contact with them through live support and they still replied to you, kindly just redirect them to this thread by telling them that you'll appreciate if the staff who manages their bitcointalk account rep will get back online and address the matter here.
Kindly provide us with screenshot of that conversation I proposed above after you managed to do it.
no response from the chat
no dialogue with support operators
just a popup where you read that the operators are all absent or busy and to fill out the form and they will respond via email
Obviously this never happened
never responded to any emails
I see.
Given Mahdi has sent them an email a little while ago, I don't think there is much impact I can do by sending them another email. However, let me try to do it, as apparently that's the only means of communication they provide for non-user.