Flipcart — Product which was ordered not delivered

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flip cart india

Sir i had ordered HRX EB 500 eliptical with kg 3flywheel 8level in NOV062023 and the product delivered on 17th nov 2023 and cash of 11499 was taken by the Corrier boy, and demo was done on 21 nov 2023, when product was unboxed by the demo person the product which above i ordered was not their and i was asked tge demo person please return the product he said it was not my job and again i contacted to the flif cart service they also said it not up to them, then gain i was lodged at complaint to flif cart services through online 06.12.2023 till now there is no response from them, the product which they delivered behind my order is useless to me please help me