Metallic noises under car when driving

I have a Saturn Relay-06 and have had it in 3 times for this noise that just started, when the road is rough-bumpy mainly I can hear a clanking noise-took it in-they said it was the steering column-1 day later-more noise and worse-took back- rivet on the heat shield came undone-riveted it back on-few hours later-more noise-sounds like something metal is hitting something-bouncing around? What should I tell them to check for??

you should go to workshop and tell them about your problem.they will solve it otherwise it can give harm to your steering