Flipkart — Multiple replacement cancelled by Flipkart

I've ordered Nothing phone 1 from Flipkart which had a green tint issue so I requested for replacement but instead of providing a good service they placed my replacement on hold and kept sending and cancelling the replacement 3 time now. And when 3rd time they cancelled the replacement they're saying it's out of 7 day policy when my request is going on by 1 and half I'm really disgusting by the fact that as an Indian i wished that Nothing never established partnership with Flipkart.