Hi, Let me start with explaining this is a community forum and not Microsoft support system and most of the moderators are volunteers from the community and not Microsoft employees, which mean that we might have some tips and idea but no one here can directly solve your issue.
the number I was given cannot be reached from my area.
Microsoft have local and global support.
(1) In what country are you located?
(2) You can try to contact the Global Customer Service phone numbers
refund for Mikcrosoft 365
(3) This means that you have a subscription and your best option is to contact the Office 365 support directly. Sign In your office 365 account and open a support ticket from there.