Several years ago, my next-door neighbors hired an elder-care firm to provide care for the wife's aged aunt while they were away. The firm had the correct house number, but their representative came to my door and stood there insisting that I had requested care and that my memory was so far gone that I had forgotten. When I got a word in edgewise, I asked what house number they had been given. When the rep repeated it I asked her to read the house number that was almost directly in front of her eyes. She read it, looked baffled and disappeared down the porch steps in a hurry.
About a week later the same rep showed up at my door to commence care and we went through the same routine. If I ever need to hire a caregiver, I'll avoid that firm.