Big Bazaar / Futurebazaar / Future Retail / Hometown — Fraud and unfair trade practice in the name of Profit Club cards

My Big Bazaar Profit Club amount also showing expired due non usage in COVID-19
I was ordering online from Big Bazaar in which no benefit of the Profit Club card (no.[protected]) was given to me and i had paid full amount of Rs 10, 000 prepaid for almost 1.5 years. In between when merger of Big Bazaar and Reliance the stock was virtually nil at all the stores of big bazaar for almost 6 plus months so i could not made any purchases. and in between the lockdown happend twice. Now when I went to big bazaar and they said the card is expired and out of the balance of approximate Rs. 4000 only Rs. approximate Rs.1900 will be refunded. This is totally unfair trade practice as in COVID times everywhere the timelimits are being relaxed. More so in this case hardearned amount is already with them and they are earning interest over it. It should be immediately refunded or else I would be compelled to approach Consumer Commission and take legal action.