BSNL — Money scam

I was contacted by a person called Karthik after I filed a complaint against FM mall money scam in your website and he informed me that he was your representative ( contact number [protected]) and I was asked to pay 10% fee and after I paid the amount he stopped answering my calls and I filed a complaint against him in your forum and after seeing the complaint he was angry and he told me nobody else is going to help you and he will ask the bank to send my money to charity
If this person is your representative kindly take necessary action or help me get a refund of the fee I paid