deleting windows fax account

I have two fax accounts, Microsoft and local. I moved the fax folder to
different location and in the inbox it now shows 2 faxes for every 1 that I
receive. One has Microsoft Fax and Scan Team as a sender other one is blank.
size for MS is 1kb and Local has the correct size. It doesn't allow me to
delete the fax. I would like to get rid of other account, how can I do that?