Absolutely. If you don’t wish to be contacted through Facebook, or a website, don’t include those details. You choose what information to provide. Some information such as the ADI number and licence categories are mandatory. 

Yes. You can downgrade from the featured subscription to free anytime. You’ll continue to enjoy Featured status and listing until your subscription runs out, at which point you won’t be billed again. Any details and information you added as part of the Featured package will no longer be visible but will still be kept on file should you wish to upgrade again in the future. 

You’re in luck. Half the work is already done for you. Simply find the listing and click the “Claim” button. After signing up and a verification process you’ll be granted sole ownership of the listing. You can upgrade it from your account at any time then.