Amazon — regarding refund from amazon

I ordered lakme absolute eyeshadow pink paradise from amazon on 20th june 2020. Then i cancelled my order on 21st june 2020. But i didn't get my refund. When i call amazon, they told me that i initiate your refund from my side, you can contact sbi bank customer care by giving me reference id. When i call sbi customer care they told me i will not help you with this reference id. You can call amazon and ask them to give you utr number then i will help you. But when i call amazon they said that i don't have utr number. You can fill charge dispute form. But i don't know how to fill charge dispute form. Both amazon as well as bank don't help me, please tell me how i get back my money.