They hardly ever, ever asked for vuluntary contributions, give them a break, the org has put them in this postition, they pay for the litriture, no one else and 99% of the time they get nothing back, they use their time and own resources, I think you are being really hateful in stating this.
As much as you don't believe in what they preach, they do, and they do it without asking anything. I hope that the b/s wake up to the WTS, why not write a letter to the society in protest for their ;putting their flock to such a terrible situation.