Just block the number on your phone. If they are calling your cell phone. At least that is what I ended up doing because the calling was endless and I have family in Ohio and all it caused was endless worry that something was wrong with my family. If they are calling a land line I suggest you call your phone company and have it blocked.
Cleveland Clinic used to be the go-to hospital for top rated care but as the enterprise has exponentially expanded it become less than personal and more about the dollar whether you owe or not. Fast losing their reputation in the Cleveland community with phone calls like these.