Reliance Jio — recharge validity

I'm received 70 day validity instead of 84 days on recharge 399 (Diwali offer).
I recharged my no on 17 oct 2017.
Previous validity expired on 7 nov 2017 & than started new plan on 8th nov 2017
It will be valid up to 31 jan 2018 but i received validity only 17 jan 2017. I has called to jio care (198) but no positive response.
So sir please take a necessary action.