P0420 code that won’t quit

I would like to also but I'd like to not spend $2,000 on another whole catalytic converter just from Toyota that is not acceptable to me just liking every other state and other car models you drive into the muffler shop you have a under 5,000 lb car the shop owner looks on his shelf for under $5,000 lb car or vehicle converter notes the direction of flow cuts the old one out mounts the new one in end of discussion. Only in Prius is this some kind of a thing. Oh well work arounds will be on the rise because people aren't going for that. If you had told me in 1985 that my Corolla was going to need a $3,000 catalytic converter well we'd have laughed you out of the shop basically I'm not going to start putting that kind of money into catalytic converters today just because it's 30 years later those parts should be way less expensive after that much time not more but that's just how I think it doesn't really matter.