Almost got scammed by something like this when our dishwasher broke last year. Found on Google Maps a listing for “[locality] Appliance Repair”, in a small shopping center storefront nearby. Called the number and sounded like I had reached a large call center, with the sound of other people talking and typing in the background, so this was the first red flag (the storefront on the map would have been this small little place). They wanted a credit card number in advance, for which they’d charge $75 or something as a deposit, also unusual for this kind of business around here. Halfway through giving them my number my spidey sense reached a tipping point and I hung up.

Double checking the map later and looking at Street View, the storefront was conveniently obscured by a tree.