IFB Industries — Got faulty piece as new washing machine

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Bought machine on 18 Nov and IFB people came for installation on date 23 Nov. We tried washing the clothes the same day but the water started leaking from back of the machine.
The washing didn't even start. We tried calling the contacts given but no help from anyone. I didn't expect this from such a brand company. I want to return the machine and get the refund. I have the bill receipt with me.
Please help me sort this out.