Yaris P9 clatters and groans back right

Hello guys, yes, I’m new here, whether I’m right here??? My Yaris P9, year 2007, km. approx. 33800, clatters and groans in the rear area, likes to be right at the back. That’s what he likes most when driving slowly over lowered curbs and over floor waves. I was already in three Toyota workshops, but everyone thinks that this is normal, the guides of the hand brake ropes are not. Has anyone experienced these sounds or has anyone ever experienced such a thing? Is there in Nordhess a Toyota workshop that really understands something of yours, because the service I have experienced so far was under all the cannons. I wish you a nice day and thank you for your numerous answers. earthberryextra