* Reconciliation of customer accounts (Account Receivable (AR) & Customer payments)* Manage corrective activities in regard to invoice inaccuracies* Provide customer service by responding, Tracking and resolving customer invoicing inquiries* Work with internal stakeholders such as Sales, Operations, Finance, Tax & Credit Analyst of possible adverse relationship issues, e.g. delinquencies, administrative issues etc.* Actively manage AR health & targets* Coordinate, facilitate, process and follow-up on financial changes (e.g. schedule restructuring, company restructurings, etc.)* Support testing of new systems releases as requested* Manage, and process non-financial changes (e.g. equipment location, billing address, serial number changes); analyzing and ensuring customer information is accurate and up to date in the systems* Delinquency Management* Identify Past Dues (current &potential)* Make Collection Calls* Manage Collection Letters (Standard Letter)* Escalate Collection Activities...