[Resolved]  ICICI Bank — Refund not received for credit card

I purchased mobile of rupees 45999 on 18th Oct 2020 18:49 PM.
Due to some EMI calculations, I immediately told to cancel. So he gave me a void slip and informed that the amount will be credited back. On 19oct 2020 around 2 AM I contacted the ICICI customer care and they told it will be reflected back within 24 hours. But it was not done. I call again it was told that within 48 hours after transaction it will be refunded, still it did not get credited. Today I called again, they told service request has been raised and asked me to send the void slip to customer.[protected]@icicibank.com with 16 digit credit card number, and it will be resolved in 7 weeks.
I request consumer board to help me in this matter, as 7 weeks is a very long time and even if amount is not refunded I need to pay the bill after generation as they told me clearly.