"Our policies require that we retain records for as long as they are needed for legal, tax, audit, investigative, and security purposes and then securely delete or destroy them. We incorporate personal information into different types of records, not always by distinct data elements. For example, your name is part of your account, billing, technical support and call detail records."
Verizon provides no specific retention timelines, using broad justifications like 'legal, tax, audit, investigative, and security purposes' that could allow indefinite retention, and notes personal data is embedded across many record types making targeted deletion difficult.