Non-responsive MWeb

MWeb changes its email system, but is uncontactable. You have to use a one-time pin sent by SMS to speak to anyone. SMS's are not sent, W/App is equally useless. I need answers as to how I can retrieve info from my folders that were created using the previous Zimbra system. I would also like to know why the system was changed without any prior notification! This is a disrespect to MWeb subscribers!