The Society is Charging me Corpus Fund after 7 Years of my Agreement with the Builder and all Requisit Payments made to the Builder.

Carefully go through your agreement with the builder to see if there's any mention of corpus fund charges or any other maintenance charges that may apply after a certain period.

If you're unsure about your rights or the legality of the corpus fund charges, consider consulting a legal expert familiar with property laws in India. They can review your agreement and advise you on the best course of action.

Look into the rules and bylaws of the society regarding corpus fund charges. It's possible that they have the authority to levy such charges, but they should be applied fairly and in accordance with the law.

If you believe the charges are unjustified or excessive, try negotiating with the society management or builder to waive or reduce the corpus fund charges. Present your case calmly and provide any relevant documentation to support your argument.

If negotiations fail, you may consider seeking mediation through a third-party mediator or a relevant authority in your area that handles disputes between builders and homeowners.

If you believe the corpus fund charges are unlawful or unfair, you can file a complaint with the appropriate regulatory authority in your region, such as the Real Estate Regulatory Authority (RERA) if applicable.

As a last resort, you may consider taking legal action against the builder or society if you believe your rights have been violated. This could involve filing a lawsuit or seeking redress through the appropriate legal channels.