Seeking Help Regarding 12+1month free offer on TSHD

[rsbor]

So around one month back I recharged my TS account by monthly*12 bucks. MRA is around 240/-. Recently I modified my pack to MRA 335/-.
Am I still eligible for that one-month extra offer as clearly now my account balance will deplete earlier?

 

[Abhinav]

Tata Sky credits 1 month cashback within 48 hours of the annual recharge after that you can make any modifications in your package.

 

[rsbor]

Got it, thanks. I also confirmed it by seeing the transaction history.
As I am a new TS subscriber, can you explain the bonus due part in the snapshot?