If you want to get more information about this agency, have a look in this group page created by a srewed pilot and he is not the only one.
https://www.facebook.com/pages/Natio...233?ref=stream
Go in Indoneisa, but don't apply with sriwijaya air ans certainly not through National skylink agency or skylink in Jakarta, IT IS MONEY LOST, many people paid 26000 dollars for a line training through this agency and will never fly, it is the shame of aviation industry those guys