Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Dear Nikki,
Firstly, thank you for your question.
Good day. Thanks for querying in this forum. We’re happy to help you.
For your inquiry on regarding "Won't allow you to access Microsoft 365", I would like to recommend you contact your admin of your tenant and request him/her to raise a ticket from the Microsoft Admin Center https://admin.microsoft.com/Adminportal/Home#/homepage
As you requested for support from a phone call, I would like to recommend the below link to check your local support hotline numbers: https://learn.microsoft.com/en-us/microsoft-365/admin/support-contact-info?view=o365-worldwide
Sincerely, AJ RAJ| Microsoft Community Moderator