Great Eastern Appliances — Air conditioner of Daikin non-inverter 1 ( one ) ton

I have booked the above product on 07/06/2021 from your Baguihati branch and I was told to deliver the 1 ton air conditioner ( Daikin ) by 9th instant. But today they told me that the same product is not available in stock and replacing that one they wanted to deliver the another product. But I denied it. Then they said about refund the amount but I told them to refund immediately as I booked the same at another place. I also said them if they delay they must be charged with interest and refund me my money. They should refund me online as I have paid my booking amount ₹ 10200 /-.
I am waiting for your response immediately.