Let's ignore for a moment all the problems that freebitco.in has. But here the user complains that they do not have the possibility of FREE spins. We are talking about promotion and free giving of certain resources. It is still free from the casino and is a matter of goodwill, but somehow it turned into their obligation.
No, it's not goodwill, it's obligation. When people bough FUN token, they were informed about benefits of Freebitco.in premium membership, one of it is certtain amount of free WOF spins. This information is still displayed on their website. So, it's not goodwill, they're just not giving what was promised.
Same thing applies to free spins that is give through email. It's not completely free, to receive it you have to subscribe their newsletter. Well, at least they're giving these free spins...