Annoying sound from front end.

I bought new amaze 2018 in may and sooner what i noticed was shocking as the car takes on any bumpy speed breaker some uncommon noice comes from the rear end and this gets horrible as days passes on.

I took my car to Honda Gurugram and they inspected all throughout; nothing judicious found to acknowledge the sound everything was perfect. Further on after some lubrication the sound was on, Honda assured me for calling honda r&d team and they will get it fixed. At last and somehow the sound stopped coming. Last but not the least few days back i still again noticed the same thing. Honda must check this issue sincerely.