RL, The NSW equivalent to EWOV is EWON at https://www.ewon.com.au/
Their brochure at
https://www.ewon.com.au/ewon/assets/File/Publications/EWON_Factsheets/Switching.pdf
says to contact EWON if:
• you are unable to find out who your retailer is
• your account has been transferred without your consent
• you are having trouble switching back to your old retailer
• you have been misled or pressured by an energy marketer
• your request to cancel a contract is not actioned.
Their phone number is 1800 246 545