Recursos do Microsoft 365 que ajudam os usuários a gerenciar suas assinaturas, configurações de conta e informações de cobrança.
Last time i had this type of issue some others sent me below message, so i am sharing the same with you.
There is no business support email address. Regarding the issue, only phone support can help.
While phone call, press "1" as a business email user and press "1" again as technical support. You also need to provide your subscription purchased information such as company name, billing information, phone number etc.