A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
If you have a reproduceable bug and you report it via the support.microsoft.com route I believe you will not be charged.
Otherwise, I am happy to report it for you via the MVP's Connect interface if you can provide the details.
Such bug reports do get looked at eventually - in some cases only when they are working on the next version of Office - but are not the way to get a quick fix.
Bill Manville. Excel MVP, Oxford, England. www.manville.org.uk