3 months paid maternity leave - if leave policy differs from every company or should they abide by the Maternity benefit Act 2017?

Hi, I have been working in a private sector for 3 years. I applied for 6 months maternity leave and HR is saying they can give only 3 months paid leave and rest will be loss of pay. Can you please advice if leave policy differs from every company or should they abide by the Maternity benefit Act 2017?
Thanks

The Act with amendments providing MataernityBenfits to all Eligible Woman-Employee applies to all Establishments without any Exemptions and failure to comply therewith is Punishable by Laws.
The Benefits of Allowed Period of Maternity Leave with Full Wages are Non-Negotiable. Please draw attention of your HR Personnel to Allowed Benefits
Kritarth Team,
16.6.20

Pl.go thru' the discussions on this aspect in this link.
https://www.citehr.com/576140-date-2...e.html#2333290
Also other related links shown on this page on to your right on the screen can be used, which also will of of help to you.

Thanks for the advice Kritharth team.