HappyEasyGo — Not giving me my refund

I booked my flight with the company in the month of Feb’21 and cancelled the same in next hour and the customer service person said I will get the refund of 7955 after the required deductions. My booking was of 9363. Now it’s almost 5 months I haven’t received my full refund. After several calls with them they are now refusing to pay the left amount because according to them their policy and conditions have changed and I am unaware about the same. Please help me with this case.