Case World — refund not yet initiated for the payment debited from my account

Address:

sithalapakkam, 600126

On 01st june 2019 i ordered cake through online in cake world chennai, when i booked it didnot show any booking order but my amount was got debited from my account for rs 2016 with payment reference - pay_ccaalyviyffeak.
When i contacted the vendor they told that money was debited from my account and for refund i need to speak to cake world for refund of money.
So i contacted nancy and other person and they told that it will be refunded and i have been chasing them since then but all waste of time and effort.
Even some time when i call them for refund of my money they disconnect my call.
Its been so long since i was chasing them with no hope of getting my money refunded. So i have decided to file the complain. Bill attachment provided.