Synergy apologises after 174,000 West Aussies overcharged The West AustralianSynergy apologises after overcharging customers $40 million in power bills Australian Broadcasting CorporationSynergy admits overcharging 174,000 customers; High-speed chase in stolen car leads to arrest The Sydney Morning HeraldSynergy forced to pay back $40 million after payment blunder overcharged nearly 175,000 The West Australian
