Lexus Canada and their Don Valley dealer made me s...

Lexus Canada and their Don Valley dealer made me so upset and disappointed, although I am always their loyal customer and purchasing their hybrid series since 12 years ago. I recently purchases one more brand new 2020 vehicle from them namely UX250H and discover annoying and strange sound has been creating when we shifted to reverse gear (even the car is not in movement), one of the reasons why I bought hybrid is because of their quiet feature, this annoying sound (up to 85 dBA) which shocked me a lot.
I have complained to Don Valley Lexus, they said that is a special feature and can not do anything about it (sales consultant never mentioned to us about this so-called special feature during the course of purchasing), Lexus Canada promised to follow up since our complain that we filed to them since one month ago, and now all of them kept silence and no follow up has been done up to present, although I sent them numerous e-mails asking for the follow up! Except writing this review to let consumers know, what else I can do?!