Left me a voicemail and sent a letter demanding pa...

Left me a voicemail and sent a letter demanding payment for an accident that happened at one of their clients business. Mind you, I had never been to that city where the accident happened. I called them and asked for details about what happened the day of the accident. They couldn't provide anything and said they would call me back once they had more info. It has been over a month. Sounds like a scam to me so please don't give them any info.