Amazon India — Refund not credited in my account

Address:

Pune, Maharashtra

ORDER #[protected] as i have order mi tab as cash on delivery option and next day i have return that product. at 1st of Aug. I have seen as a status that refund is issued and return is succesfully done. But actually it doesn't credit in my account so that i have reached to customer service reprentative he told me that your amount is credited by NEFT wait for 4to5 bussiness day. so today is not credited to so i have reached to customer support service but know they are telling me that it is eeror from our side so it is not showing when you paid for this order. and you never get refund for this