Few months later some contractors come along and dug up something in the middle of it and filled it in with tarmac instead of putting the bricks back. Looks shit now.
Cheapest of 3 quotes?
Sufficient backhanders to get the contracts no matter how crap the work is?
Only contractor locally big enough to quote?
“We’ve got another job scheduled there in a couple of months, we’ll fix it then. No point doing it twice” (Second job either never existed, or was cancelled, final repairs never get done.)
Or just a complete and utter lack of enforcement or follow up.
There’s a badly filled trench outside my last house in the UK, they dug it up and filled it badly while i lived there. It was still there when i visited friends there, ~10 years later. Despite me and at least half a dozen of my neighbours complaining (it was right across the drives of all the houses opposite).