Xiaomi Pet Fountain Lacks Filters for Months and My Cats Suffered Health Issues

The filter for the Xiaomi Pet Fountain brand pet water dispenser has not been available for 6-7 months. We have inquired everywhere to get the filter. I even emailed their headquarters. When I called customer service, they said they didn't know when the filter would arrive, and that I should send the device to the service center, and they would install it and send it back when it arrived. In the last veterinary examination, stones were detected in our cats' urinary tracts. We spend a fortune and buy a good brand, but then there's no one around. When I wanted to return the product, customer service said it was not possible. I have also filed a complaint with the government authorities. If a solution doesn't come from here, I will break the product in the middle of one of the Xiaomi sto