You mean by promo/attractive package means,
pay lesser than what you're paying now, correct?
I believe you guys already aware that Astro is not performing well financially, but even if you don't care about it, somebody's going ensure that Astro doesn't plunge fast till the point of bankruptcy, right?
Astro has been "taking measures" to make the decline in revenue to be as slow as possible, to continue sustain the business, as well as finding revenue elsewhere, but mostly still revolves around advertising related.
They put revenue more important than decade-old customer loyalty, and it has always been like that.
So, in conclusion, the answer to your question, is through retention offers only.
Meaning, you call customer service and tell them you want to downgrade/cancel Astro, then you'll get some offers already.
Of course, do ensure your account does not have any remaining contract before doing so.
Not lesser but offer a great package but same rate as im paying now or doesn't mind paying bit more for a good deal