HDFC Bank — Bank not support for refund processing fees.

I have order one phone model no. Redmi note 9 pro from amazon dated on. 8 Oct 2020 on credit card EMI.
But order was cancelled by amazon itself by stating "phone is having internal problem" and delivery boy took phone from me. On dated 13 oct 2020 i have received refund amount of Rs. 13406₹ but processing fee & GST% got debited from my account which has not received.
Again on 14 Oct 2020 refund amount got deduct along with processing fees + GST without my approval.
Again same product was re-ordered by amazon without my intimation amount got debited from my account along with processing fee + GST. And now who is responsible for my processing fees + gst charges got debited my account. Amazon customer care and HDFC bank not support me to resolve this issues. Now m mentally harassment with this both. Kindly help me to resolve this at as soon as possible.
Refund Reference # 75503720285042831386490

Regards
Kiran Mhatre
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