Thank you for your response and for confirming that our situation is a tenant lockout requiring assistance from the Microsoft Data Protection Team.
Our organization, IDRYMA NEOLAIAS KAI DIA VIOU MATHISIS (INEDIVIM), is a Greek public-sector organization with an active Microsoft Open Value Subscription Education Solutions Agreement (Agreement Number: V6179344).
Unfortunately, creating a new Microsoft 365 trial tenant is not a suitable solution for our organization.
We have already contacted the published Microsoft support telephone numbers, but we have been unable to reach a support representative who can assist us.
Could you please provide a specific, official way to contact the Microsoft Data Protection Team without signing in to our locked tenant or creating a new subscription?
Additionally, can our authorized Volume Licensing reseller, OLYMPIA TELECOM EPE, submit a support request on our behalf and request escalation to the Data Protection Team?
If possible, please provide an official Microsoft support link, contact channel, or documented escalation procedure.
Thank you for your assistance.