• Services billed but not installed
• Services disconnected, but still billed
• Services billed, but not ordered
• Services billing contrary to tariff
• Billing of services no longer offered
• Billing in excess of contract
• Billing errors in supplier accounting

systems

• Misapplication of taxes and surcharges
• Cellular telephone features and contract audit
• Plan Optimization
• Oversubscription
• Negotiation or renegotiation of

contracts

• Mobile device optimization and plan management
• Unused facilities
• Incorrect call routing
• Alternative technologies (services

or equipment or both)

• Alternate services or service arrangement