Visa Application

Statement of Approval / Acknowledgement Letter from parents does not need to be official, in several countries 17 can be considered as under age
If the financial support from his parents, then the bank account does not necessarily in the name of the traveling party.
Yes, statement from inviting party should also mention expenses require during the stay in Australia.
"KARTU KELUARGA" = Family (registration) Card is known to all Indonesian citizen. No need to be the original, color scanned should be adequate - unless the office doubting the originality (it is unlikely)
Our address is shown at below signature, but that is only for mail distribution center - most of our staffs (Translators, Interpreters and staff for visa, legalization etc working in different places and communicate by VOIP or mail). Payment may be made by Bank Transfer (through e-Banking, Internet Banking or ATM) or Paypal.
Our courier will pick up or receive required document with official receipt (especially when they are original)
In rare cases of an Interview for the applicant, we will send notification via email or phone call
IDR 2,750 is total cost for visa, required document will be furnished by the applicant. We will fill in Application Form. Upon your acceptance of above terms and conditions We require 50% in advance (or IDR 1,500,000)