This is a literal, flagrant and outright lie on the part of Microsoft. Do not listen to it, do not believe it. I assume that you are being told by your management to peddle this, and it is not your fault, but it is a flagrant lie from your team.
@ Ellebear Dee You are being forcibly upgraded to Office 365 Personal + CoPilot without approval as a cash grab and a way to pad the adoption of the AI nonsense that Microsoft is now desperately trying to find someone to pay them to use - hence why your bill was changed from £79.99 to £104.99.
You can downgrade back to £79.99 and remove CoPilot features as advised here: https://support.microsoft.com/en-us/office/switching-to-microsoft-365-personal-and-family-classic-plans-58342e83-38e7-4cda-b63b-88604a8fb7ef
For when Microsoft erase this page and pretend it never existed, it says:
"Downgrade to Microsoft 365 Personal or Microsoft 365 Family Classic
- Go to Services & subscriptions. Sign in with the Microsoft account associated with your subscription, if prompted.
- Find your current subscription and select Manage > Cancel subscription
- To downgrade to another plan with fewer features, select Microsoft 365 Personal Classic or Microsoft 365 Family Classic, or another plan that works for you.
- Follow the instructions to complete the switch.
Your existing subscription might not change immediately, but it will automatically switch to the new plan at renewal. You will not be charged for the new plan until it renews. "
Microsoft should be ashamed that you've been told to offer outright lies as answers here.