I have extensive experience with various billing software, including QuickBooks and Oracle Financials. When handling discrepancies, I follow a systematic approach: first, I review the original invoice and compare it with the payment received. If there's a mismatch, I contact the client for clarification and adjust the records accordingly. I also maintain detailed logs of all discrepancies and resolutions to prevent future issues.

I prioritize tasks based on urgency and due dates. For instance, invoices with approaching deadlines are addressed first. I use a task management tool to organize and track my work, ensuring that no deadlines are missed. Additionally, I communicate proactively with clients to manage expectations and address any potential delays.

To ensure accuracy, I double-check all calculations and cross-reference them with the original contracts and purchase orders. I also conduct regular audits of billing records to identify and rectify any errors promptly. Implementing a peer review process has been effective in catching mistakes that might have been overlooked.

I approach client inquiries with a patient and professional demeanor. I gather all relevant information, such as invoices and contracts, and provide clear, detailed explanations. If a dispute arises, I work collaboratively with the client to understand their concerns and find a mutually acceptable solution. I also document all communications to maintain a transparent record.

One challenging situation involved a complex billing error that resulted in a significant undercharge. I reviewed the entire transaction history, identified the root cause, and corrected the error. I then communicated the situation transparently to the client, explaining the correction and ensuring they understood the adjustment. This proactive approach maintained trust and avoided future issues.