Domino's Pizza — Double payment and not refund

Address:

Sion mumbai

On 15th August i ordered pizza from Dominos pizza of Rs 533.40 I pay with QR code method after confirmation of payment they received my ordered and tell me to wait... I was waiting for my pizza within 10 min they call me at cash counter and tell that ' ur payment was not received.. u have to pay again on link which I'll send u' I check my balance money was deducted from my account I told them ' money was deducted from account' she told " u will get ur refund money in 1-2 hours" so I pay again with the link what she send me on my contact number... after one day I contact her ask about my refund she told " mam I'll check.. I'll send u mail" after 2 days also I didn't received any mail OR my refund... plz help me out with this...