Domino's Pizza — refund have not been made

Address:

Muir road opp Anand hospital, Allahabad, Uttar Pradesh, 211002

I ordered 2 medium pizza order cancelled but amount was deducted.. It's already been 15 days and i haven't received my 880 rs back. This is not acceptable that such a big brand do this type of carelessness. Never going to use or suggest anyone... I have placed complaint so many times but it is of no use... So please try to help me to get my money back.