In this case, don't ask so many merchants, reply directly to the reasons, apply for a refund, and give him a test report. Or photos of damaged goods. Of course, it can't be too obvious that it is man-made damage.
If the merchant promised to return the goods before, there would be no problem and it would definitely be returned to you. If you don't return the goods, please find the customer service on the app platform, that is, self-operated customer service such as Taobao JD.COM. Please note that it is not a merchant. Under normal circumstances, customer service will handle it.
There are three conditions for compulsory refund of general customer service.
The businessman promised to give you something in return.
(2) The goods are damaged by the buyer's human factors.
③ The purchase date is within the warranty period.
(The shelf life here refers to the return period. General goods are 7- 15 days, and there are longer ones, depending on what the merchants say. )
You haven't dealt with it yet. I guess it's bad enough. Business has dragged on until now. You are too slow to deal with it earlier.
You can try customer service again. If the customer service says no refund, then you will be dumb. After all, time has passed. Merchants don't handle it according to their conscience.