Jet Airways — your recruiters are asking money

I have alreay submitted 23400 rupees and now they are asking me to pay additional 18900 for my joining letter plz look into it. As no company will ask for money for the training or joining process. And also when they asked for the money they need it urgently but i asked for my refund they need 30-45 days of time what is this all about. As your recuiters are asked for money from the joiners