Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
In addition to the Q&A Assist answer, this also may help:
This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
I cannot log to my business account to cancel subscription Nor I can to talk to business representative to seek help as when I contact from my personal account they are unable to help with the business account although they are both linked
Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
In addition to the Q&A Assist answer, this also may help:
If you are unable to log into your business account to cancel your subscription, you might consider the following steps:
If you follow these steps, you should be able to find a way to access support for your business account and address your subscription cancellation needs.
References: