State Bank Of India [SBI] — amount refunded by amazon (reference no generated). but not initiate in bank account.

Two product amount will be refunded by amazon 17/04/2019. Referene no will be given by amazon. But in my bank account amount will not be initiate. Amazon said me you go in bank. I go to bank again said talk to amazon customer care. I call the sbi customer care with reference no, i will tell you charge dispute form will be filled, customer executive tell me not to initiate charge dispute form.
Now what can i do next.
How can i get amount.