WorldMark by Wyndham review: they reps cancelled our booked rooms

We have booked 10 days’ vacation through Worldmark Vacations. We have collected points and we used them to pay for the vacation. We have fully paid for these points, but the company has collected money from our account again and cancelled the vacation. We didn’t know about it, because these reps haven’t warned us. No one explained why they did it, but the company told that all their rooms were booked and they couldn’t help us.