My first suggestion is that you not ask us to guess what's causing a noise that we haven't heard - make a video, host it on youtube and post a link.
Second is, think seriously about your financial situation, replacing hard to find parts that don't need to be replaced is like throwing money away -
Now - go back and look at your first post - does that mention the brakes seized? No, it doesn't - it says you had a noise, you replaced the rotors & bearings and the noise was still there - does it tell us that the noise started after/when the rotor & bearing were replaced? No, it doesn't, that information comes from the second post, which by the way says the calipers & rotors were replaced, no mention of bearings.
Details make a difference.
One last suggestion - if the noise is a continuous thump-thump-thump as the car moves (and not a clunk when you turn left or right or brake) - try swapping the rear wheels left~right and see if the noise follows the wheel.