Collections Process

We currently use an excel spreadsheet for our aging report.  Even though this is a very manual process it allows us to track the collection efforts by individual invoice and easily sort by customer.  We would love to eliminate the excel spreadsheet and start utilizing NetSuite but we have been unable to duplicate our current aging report through customer reports.  We have one inside collection specialist who contacts customers via email, phone and fax and would like to see a detailed report by customer and by individual invoice of the collection activities.

I would love to hear how other companies are using NetSuite to handle their collections.