Jiomart — Refund didn't get after 12 days

I cancelled 2 prepaid orders on Jiomart but still after 12 days there is no solution provided & the customer care on mail is saying only one word to wait for 7 working day. They neither providing reference numbers for refund ahainst which I can ask to bank nor the duration on which the 7 working days will be finished. My order numbers are[protected]M,
[protected]M.