Recently changed to RM80 First Gold plan. How do I get more data if/when I run out?

Previously it used to be by SMS to 22188. However when I try it I get a service temporary not available.

Reading up a bit more, for the new First Gold, it's RM20 for 1GB+Free Yonder Music via 28882. So its more expensive than the previous (RM15 - 1GB / RM50 - 5GB) as they give me something "free" which I already get for free? Celcom needs to update this price plan!

there's a few options...