CDR Invoices

I need to import my cdrs into a system that will create an invoice, convert to pdf and email. 1. My cdrs are for approx 500 different customers. 1.1 I would need to import my customer details into the system as well. 2. Please see attachment for header and details of cdrs. 3. I need an application (GUI) that if I query on a specific customer number all the cdrs linked to that customer is presented and all customer contact details. 4. I will then need to generate and invoice from that screen. 5. I would need to have a method that I can track payments and invoices. 6. my invoices will be in a csv or excel format, no changes needs to be done on cdrs as it is already modified. 7. I would need to insert my company logo