Jiomart — ITEM order was cancelled and amount deducted from my account but not refunded

I placed the order on 25th of august 2021 for an amount of Rs 509.46.But jiomart cancelled the order. Till now the refund amount has not been credited to my account. After repeated mails from my side they have given an ARN number. My bank has also sent a mail but no response from Jiomart. Is JIOMART cheating people? please revert at the earliest.