How concerning is a threatening text message from an unknown number?

Posted by chronicles_of_bean@reddit | AskUK | View on Reddit | 49 comments

Hey, This morning my phone rang whilst I was making breakfast. I thought I'd call back whoever it was after I'd eaten. Anyway, when I checked my phone I realized it was an unrecognized number. They also sent me a vague, unsettling text: "I'm following you." Honestly, it's rattled me a little. I've lived in the same city my entire life, and I haven't fallen out or argued with anyone badly enough to warrant that kind of response I assume it's a stupid prank or a weird scam, but I'm an anxious person and I kind of wanted to report it to the police. Is that an overreaction? Should I just ignore it and pretend it never happened?