Nandilath G Mart — Nandilath Gmart deliverd damaged Refrigerator

I have bought a fridge from Nandilth G mart attingal on October 31st 2021. When it was switched on, very fowl smell of some chemical was coming out with some sound. We called Nandilath G mart, they didn't turn up first..whatever food items kept was not able to be consumed ..that much smell in all food items kept in fridge...again we contacted..one technician came and did something in the fridge..smell reduced but it's still there...again contacted.. have called more than 20 times..another technician came ..he said fridge needs to be cleaned up...needs to be taken back to their shop for 10 days ..actually we have sold our old fridge also...what will we do? Cheating ...nandilath g mart cheated as by providing damaged product . Dont they have a quality checking before selling? How will a customer identify the product especially a fridge we are going to buy is of good quality? We cannot switch it on in the shop and check isn't it?We are suffering..we lost our money and time buying a damaged product ..I asked for a new fridge...but nandilath G mart is telling it has only warranty and no guarantee...kindly help us...