Sargam Electronics — Not able to claim extended warranty For Hitachi AC

I purchased a Hitachi Window Ac in 2018 & along this I purchased 4 year extended warranty scheme from Sargam Electronics Vikas Marg, Preet Vihar, Delhi -110092 which is valid from august 2019 to august 2023. The extended warranty was provided by DG Care which is a sister company to Sargam Electronics and all extended warranty are provided by this company. Due to Sargam Electronics company shut down, their is no way to contact them and all contact numbers of this company have been switched off. I paid Rs 5, 200 extra for this service and have not availed it even once. My AC is facing cooling issues and have got a quote of Rs 3000 from outside market to get it repaired. I request the concerned authority to take action on my complaint and please help me to avail my Extended warranty scheme from Sargam electronics.