Judy – I’m sorry to hear this. I am surprised, but it does happen once in a while. I would probably get a 2nd opinion just to make sure. If they were solid hardwood and are now too thin, then it sounds like they’ve been refinished many times. Generally solid hardwood flooring is 3/4″ thick and that is what you should get if you put in anything new. That will then last a long time and you won’t have this issue in the future. Denver Hardwood Floor
Refinishing can actually take much more time than fully replacing a wood floor. Refinishing is a messy, meticulous process than can take approximately four to five days, during which the floor surface must remain completely untouched. The process requires sanders, edgers, buffers, scrapers, brushes, base coat sealers, topcoat sealers, putty knives and sometimes paint. Replacement, on the other hand, can be done in considerably less time using only lumber, a couple of saws, measuring tape, a flat bar, a chalk line and a nail gun. Denver Hardwood Floor
Rigid Core flooring is a category of resilient flooring, and it has been designed from the ground up with modern homes in mind. It’s 100% waterproof, easy to install, and provides extreme scratch and indent resistance when compared to solid or engineered wood flooring. It also offers a wide range of design options because it isn’t limited to traditional wood species. Its hybrid visuals, exotic species, colors, and textures go above and beyond anything traditional wood flooring can offer. Denver Hardwood Floor

Eliminate any problem spots to make the subfloor level. Sand minor humps down with a hand-held or orbital sander to make the subfloor level. To fill any dips or low spots, use a leveling compound (also known as floor patch). Mix up the compound according to package directions, fill in the dips, then pull your straight piece of lumber back and forth over the spot to flatten and level it with the rest of the subfloor.[7] Hardwood Floor