Can concrete Curbing used for Landscapes be increased in height or is it a fixed height for all the installers?

I bought a townhome in Atlanta GA a couple years back and the developer is now putting the final touches on the subdivision. The problem is that the concrete curbing adjacent to quite a few driveways have cracks and chunks knocked out of them because they were installed prior to the houses being built. The curbing really looks unsightly. The developer (Pulte homes) is having guys come around and just fill some of the cracks with a thin layer of concrete. It was my experience with my own driveway here that this method doesn't work to well. After a few months the concrete cracked and the new filling just popped off the curbing. I don't think that our subdivision should settle for this type of patchwork. I have heard that new concrete doesn't bond to old concrete.......is this true and should we accept this type of repair. Our developer (Pulte Homes) has constantly cut corners and been reluctant to make needed changes in the past, so I can't always trust what they do.

Now those globalist economists and open borders advocates can't say that the Mexicans are taking jobs that no one is taking because there are no jobs left. There is no more excuse for this kind of immigration. Is a bad economy good for curbing illegal immigration?

I bought a house with wood curbing but the wood is faded and has no protection or sealant on it. Should I / could I use a deck stain/sealant? Would it look okay?