State Bank Of India [SBI] — Refund initiated by amazon but not credit my bank account

Address:

Babul ganw

I have ordered IQ Z3 5G mobile on Amazon feb 06.2022 but any reason l have cancelled the mobile 3-4 hours later and I seen my updates as my refund has been completed on feb 06.2022 but actually not credit to my bank account when l call to customers care they told me we are allready credited your amount but it is not going to your account IQ Z3 5G of SBI by default . They told me to call SBI costmar care I did. But i did not get my money on my account till now .after that Amazon costmar care told me to write a (charge dispute Frome) IQ Z3 5g from their site they given a reference number which is a proof for their payment but when i call SBI costmar care says that it is not our duty and this is going continuously 2-3 days happened no one is listening me. Help me sir
My amount :8.490rs
RRN ID :[protected]