This issue is spam: https://freedomsponsors.org/issue/867/travel-doctor-sydney#description
Yeah, this is a spam thread, and it should be deleted asap. There will be some people who'll complain about this Source: weednews.co thread, but I think that contacting these people will be a huge disappointment, and you shouldn't do that.
FreedomSponsors will charge a 3% fee on top of your payment. For offers in US$, Paypal's fees will also apply.