Customer had issues with a flush assisted toilet making noise which was installed in 2022 . Several plumbers have been out to repair the toilet by changing the cartridge but customer says it is still making a noise . I was the last out here to change the cartridge free of charge but customer insisted that it was still making the noise. I checked toilet and it seemed to be working fine I flushed it 6 times no noise or running. I called the office and since the toilet was not under warranty I offered a discount of $250 on a new toilet . Customer was not interested and would look elsewhere.