I feel your pain, it’s why complexs need to ensure the body corporate committee has the rules in place and is proactive enforcing this. If they are not it can be hard to correct without a whole lot of cost and angst for all concerned. Noisey hard surfaces need to have a sound deadening underlay and not just be laid straight on the stripped back concrete floor. Probably the most likely culprits are home renovators/DIYers, off-site investors, or those looking to renovate and on-sell to someone else.