Ibibo Group / Goibibo — Flight cancel refund fraud

My name is manish madhav kuril i am from allahabad up i book a flight ticket form delhi to calicutt on 5sept 2022 but due to some issue i cancle my ticket on 5 sept around 7:30 pm they charge me around 15229 but after cancle my ticket they call me after 3 days and says they ticket cancllention charge around 6500 but in dgca guideline they clearly mention if you cancle the ticekt within 24hr the full amount will be refund but they charge me 6500.but i cancle my ticket within 24hr but after they charge m e 6500 kindly help me