United Bank Of India [UBI] — didn't get refund yet

Address:

854202

I ordered a product of rs.1745 from amazon.in on 21. November 2018. Due to the issue of bank, it was cancelled due to the declination of payment made through rupay card of my account. After enquiry of few days i found that payment stuck into bank gateway which should be refunded within few days. However not only payment is not refunded yet (4december 2018) in my account also bank is not taking any responsibility of this incident
It my request to authority to take proper action in order to make sure that refund of money should happen as soon as possible.
Your
Kushagra jaiswal