aliexpress — Problem with product

I brought a Xiaomei cell phone from Aliexpress (Order ID [protected]) for $390.02 on 11/11/2021, however, the phone has issue to turn on and off. Because it is still under warranty, so I contacted the seller Aliexpress starting from 8/19/2022 ), but now after many times contacting with AliExpress, I still cannot get the problem solved. I even can repair locally and share the repair fee with them only need them to send me the parts which cannot be found in the local repair store, but they still refuse to give me the parts. The power button does not cost much, but they just do not want to solve this issue.
I would appreciate your assistance in resolving my complaint. I would like for AliExpress to send me a replacement phone or repair the phone. If the phone cannot be replaced or repaired, I would like for AliExpress.com to refund the full purchase price of $390.02.
If the phone must be returned to AliExpress, please direct Aliexpress to make arrangements.