In Reply to: Sim card posted by Peppie on Monday, 13. January 2014 at 16:56 Bali Time:
From the Mall, if you go to the top of the escalators, you will be immediately in front of the Telkomsel (similar to Telecom in Australia) Customer Service Centre.
Inside, you take a number and wait to be called to the counter. You can buy either Telkomsel or SImpatti SIM cards there.
They can also give you any assistance you may need regarding local and overseas phone calls. Hope this helps.