HCL Technologies — I have not got my money refund

I have received a mail on 12/7/2023 from Kesavaraj T Reddy where he said you have to pay 10000 rs for 2 programs for hiring purpose (i have paid 5000 first and after some time 5000 i.e. 10000), then another day on 13th he called me and said i will send you 10000 because you have send me in two transactions he said to give me account details in my account details my ifsc was wrong so i have not recieved. Then from my account I have sent 10000 he said your interview will be on 14th july. On 14th evening he called me and said you have to pay 27000 for HCL first carrer program. I have neglected that program because already my 20000 was not refunded. So he said if you will not pay your whole process will be stop and you will not eligible for interview purpose. I have sent correct ifsc code, He said your money will be returned within 24 to 48 hours. I have till monday(17 july) from monday he is not recieving my calls and sms. Please help me