Earth Infrastructures — Non communication for Resolution process

We purchased a commercial unit in Earth Tech One, Greater Noida in 2012. We were not informed about the resolution process and so failed to get on the list of financial creditors. Alpha Group won the bid to resume construction of the pending projects. To consider us as legitimate buyers, they are asking for Rs 2500 per sq ft of purchased space. This is daylight robbery. We paid in full by 2015. Assured returns were stopped in 2015. The directors of Earth Infrastructures were imprisoned for fraud. We have lost time, hard earned money and health over this dastardly situation and are being penalised for not having been informed by the IRP appointed by NCLT. HOW CAN WE APPEAL AND BE CONSIDERED AS LEGITIMATE FINANCIAL CREDITORS?