Transmission Noise problems of the 2012 Nissan Cube

I purchase my 2012 Nissan Cube on January 2019 w 93k on Jun 2019 started a noise . It became increasingly worst, took it to the mechanic he road test the car ,and told me it was the transmission I google the cvt trans and find out that Nissan have trouble with those trans ,they extend the warranty on some models from 2000 to 2010 I took it to rt. 46 Nissan on totowa NJ to make sure that was the problem and it was . They want $4163. 00 to repair/replace the trans that they know have a bunch of problems . . Twice the car stall when I`m driving I`m not going to pay for a trans. That has a history of problems,I feel Nissan should extend the warranty on 2012 models I`m sure my complain it`s not the only one.