Reading novels online and paying by SMS, what money is deducted? It seems that it is not the phone bill deducted. . . Solve!

Reading money. To recharge the short message, just send a short message: log in to the novel reading network-payment center-I want to recharge-recharge the short message-fill in the mobile phone number-Next-confirm-confirm the payment-receive the short message-reply to the short message-receive the short message-complete the purchase (it must be 30 yuan, 1: 40).