HP India — regarding the warranty

Address:

Pallichakkalayil house eroor north tripunithura, Ernakulam, Kerala, 682306

I have bought my laptop on 30/08/2016 with one year warranty and I have extended an additional 2 year warranty along with the existing 1 year warranty.so my product should have warranty till 29/08/2019 but when I checked my warranty status it shows that it has expired on 20/07/2019 that is one month earlier it had expired.this the fault from HP side.i have given all the documents to claim 2 year additional warranty also they have approved the documents that I have given.i need the warranty till 29/08/2019
I am attaching the invoice 0f the laptop purchased on 30/08/2016 and also the HP care pack certificate which ends on 29/06/2019. If it is three year warranty it should only expire on 29/08/2019.
Now my keyboard is not working this is why I recognise the error in warranty period