I lost 6112.911rs

I saw a dress on Instagram and I purchase a dress for 450rs and he told 569.1 rs shipping charges and we deduct 7%i.e 39.87rs and the remaining amount is refunded within 5 minutes.I paid 569rs and he told that is wrong payment madam you pay 569.1rs and I paid 569.1rs he told me again this is wrong payment madam and I ask what is the right payment sir,he told 569.01rs .I am confused this is not equal to 569.1rs and I asked this is not equal sir ,he said you pay 569.01rs madam and the 569+569.1+569.01rs refunded to your amount.I paid 569.01rs amount is not refunded he told that pending charges for refund for 1487.20rs and I paid then amount not refunded he said that request for return charges is applied mam 2468.6rs I paid but he told that amount is not successful completed madam,you pay 3000rs. He was not refunded my amount , he only said this time your amount is refunded within 5 seconds. Iam not pay any more amount to his QR code,please help me to refund my amount.