Telstra

This company received a score of 48.8/100 in the Newsweek Green Ranking 2017, which ranks the world's largest publicly traded companies on eight indicators covering energy, greenhouse gases, water, waste, fines and penalties, linking executive pay to sustainability targets, board-level committee oversight of environmental issues and third-party audits. Ranking methodology by Corporate Knights and HIP Investor.
Source: Newsweek (2017)

In 2018 the Federal Court fined Telstra $10 million for making false or misleading representations to customers in relation to its third-party billing service known as "Premium Direct Billing" (PDB), following action by the ACCC. The Court held, by consent, that Telstra misled customers and breached the ASIC Act when it charged them for digital content, such as games and ringtones, which they unknowingly purchased. Telstra admitted that more than 100,000 customers may have been affected and has committed to offer refunds to these customers.
Source: ACCC (2018)