Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Unfortunately, phone support for consumer (home use) products is very limited these days. Phone support may be possible at a later stage, but you always have to start with the chat at https://support.microsoft.com/contactus .
Also/alternatively, you could explain which issues you have encountered. Maybe one of your fellow users here in Q&A will be able to point you in the right direction.