In the saunas the girls are competing against each other, to be picked by the randoms, and more importantly to acquire and retain regulars, once you start visiting saunas and listening to sauna gossip, you know who to pick, and who to avoid, some girls are always available in the lounge, others are always busy, there is a reason for that. When phoning, ask who is on, and then ask who is free, it give you a clue.