Issue deleting Azure AD

AWB
0
Reputation points
Hi
We have an O365 E3 subscription (not for profit) and I enabled Azure AD services to do some testing for a security solution.
The challenge I have now is how do I delete the Azure AD with killing my O365 users etc? Already been billed nearly £300.
I can see where to delete the Azure AD tenant, but looks like I need to delete users etc. I assume doing this will delete them from O365 too.
Any adive, much appreciated.
A.