Amazon India — I m complaining about refund money

Address:

Sikandrabad, Bulandshahr, Uttar Pradesh

I purchased bluetooth i7 from amazon on 26/09/2019and done full payment by upi pay but order was cancelled on 27/09/2019and now amazon is saying that refund has been send to bank. So contact customer service and file charge dispute they had given me a no. Refund reference#[protected]
But customer service is saying they can file nothing like charge dispute and can only check if money came to your account or not.
Same behaviour by branch also.
Don't know what to do