Cult.fit complaint: Manufacturing defect

This is with regards to purchase of a treadmill last year November 2023, after few days of use, Loud noise started coming from the treadmill, and January 1st week 2024 I had raised a complaint and many technicians visited since then and all of them ed that it is manufacturing issue,since that day I have been asking for a refund, and inspite of sending close to 200-300 mails since January 7th
I still haven’t got any response from them
Just a week ago they called and said they will provide me with the replacement
I have already experienced and seen the worst service provided by them for a complaint raised in January and same is still not resolved, hence I don’t wish to continue to associate with Cultsport anymore, I would like to have a refund of my product
Please find the technicians review attached
For one product itself Cultsport has taken sooo much time and still not resolved
It makes customer loose the trust on the company
Even after 4months when the issue is not resolved, how can they expect customer will purchase the product again from them or take a replacement.
Worst after sale service