All Services Business & Finance Telecommunications Invoice auditing $50/hr · Starting at $100 Telecommunications Invoice auditing, inventory optimization and or creation. Billing disputes, supplier contract negotiating. About $50/hr · Ongoing Download Resume Telecommunications Invoice auditing, inventory optimization and or creation. Billing disputes, supplier contract negotiating. Skills & Expertise Audit SoftwareBillingTelecommunications Industry 0 Reviews This Freelancer has not received any feedback. Browse Similar Freelance Experts Billing ServicesNegotiatorsNetwork Administrators