Are you a new subscriber ? If not, then I don't know the answer.
http://www.astro.com.my/packagepromo/greatpackagesCurrently, there is a "The Best of Chinese Pack Offer" promo (8 Jun – 31 Jul 2012)
for new subscribers who signed up for a minimum of RM 50 monthly subscription. This promo allows free view for 2 months on non-subscribed packages except for the following packages: Astro First, Astro Box Office Movies, and Astro Box Office Sports and do not include HD channels and HD and PVR subscription fee.
Mustika HD ch 134 was launched recently so all subscribers to HD service can watch until ?? July 2012 (cannot remember the exact date)
Hehehe... your ID suggests that you are malay or at least not chinese BUT... mmm... I suspect that Astro also opened this promo for ALL new subscribers during this promo period. Well... I am only guessing !For your subtitle issue, please contact Astro Customer Support by phone because they are the best people to help on any technical issues and its much easier by direct person-to-person conversation. Since a few months ago, I did comment a few times before, about Ast Cust Supp as the
first preferred contact for help. Your Astro subscription already included paying for their service support
so don't be afraid to call them even for minor issues OR for any advise such as Byond settings.
Hehe... the only problem that many people will face is difficulty to get someone to answer the call BUT its the only way to get problems fixed a bit faster. Try calling at about 8 to 9 am. Hehe... by the way, their Astro support staff will always try their best to ignore or avoid answering in twitter and facebook which is NOT their official duties there !
Sorry for not answering your "subtitle" issue.

i'm 5 month old customer. huhuhu...
i check with astro portal (ch200), mustika and indo pek include in my subscription. but astro CS check i only subscribe to sport. they may have problem with their system or have some ongoing promotion?. this happen almost 3 week now and my current bill (june) still same as usual.
weird thing...
hope dont have extra charge or i will...