How can I close my account?

I have recently transferred my Xbox Live Gamertag from Windows LIVE account A to Windows LIVE account B.

I want to delete account A, but receive this error message:

You need to cancel any paid services or Microsoft Points account associated with your Microsoft account.

I tried to access the Billing section, but receive this error:

This Windows Live ID does not currently have a billing relationship with Microsoft.

Any help on how to close my account will be greatly appreciated.

Thanks,

Patrick

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