Amazon India — i have ordered carbamide forte garcinia cambogia and cancelled it but did not got refund

I have orderd on 6 aug and paid online and on 8 aug i cancelled the item after 1 day i got mail that my refund is initiated but still i have not got my refund. Reference no is 545918. I have checked my ministatement but amt has not yet been credited and 19 was last date for refund to be reflected into my acnt but there has been no refund and i have complained but the executives are saying that refund has been initiated