If you're in contact with the account holder of the duplicate profile or have access to the email address/mobile number associated with the other account, can you please attempt to claim the profile?
You can "Find My Profiles" from your account at https://www.playhq.com/account/profile (bottom of profile tab) or use this account maintenance registration form to initiate a claim:
https://www.playhq.com/basketball-victoria/register/588b28
If this is not possible, please complete this profile merge request form:
https://www.cognitoforms.com/BasketballVictoria1/PlayHQProfileMergeRequest