Most ridiculous idea to implement this kind of Plan for customer.
I am trying to permutation and combination for this plan and found this plan maybe useful for very long term recharge only.
Say , If I recharge 1498 for 24GB data and unltd voice , 365 days and recharge 449 on the same day
Then total recharge cost will be ₹1498+449=₹1947
And this way we will get unltd voice daily 2GB for 365 days and more over 24GB add on.
And same plan is available at 2498
So upfront we can save 2498-1947=₹551
I don't think this plan in no other way is valuable