Meesho — Can't exchange product due to product is out of stock

Address: WeWork, Vaishnavi Signature, 78/9, Outer Ring Road, Bellandur Village Varthur Hobli Bengaluru East Ground Floor Bangalore, Karnataka 560103

Website: www.meesho.com

I had ordered rubber cap of size 25mm from meesho. I had selected option "only wrong/defects items returns" Because I never wanted to return that product except wrong/defects. In this I got 2 options, I can RETURN item if it's wrong/defective and i can EXCHANGE item for size/fit issue(1. Too loose, 2. Too tight, 3. Didn't like the fit).
So my issue is products is not wrong nor defective. I got what I ordered in good condition and quality so i can't return it but i can exchange it for size/fit issue.. when I tried to select option 2. Size is correct but too tight. it shows product is out of stock.. I couldn't proceed. So this is Meesho's problem not mine. In this case meesho have to take this product back.. Meesho/seller didn't mention that, if the product is out of stock then customer has to keep it to themself.. i can't wait till product get back into stock because I can return or exchange it till 21st October 2024.
Other shopping site like Myntra, Amazon have good policies. Please check once. They understand their customer better and have solution for every problem.