I used to work at a gas station (that no longer exists) where we would get phone calls several times a day. The unidentified caller would ask what our price was

I used to work at a gas station (that no longer exists) where we would get phone calls several times a day. The unidentified caller would ask what our price was, ask what the price was at the gas station across the street, and tell us what to set the price to. Basically anybody could have called that place and set the price to whatever they want (within certain limits of sanity, $0.25/gal or $30/gal probably would have prompted some additional phone calls).