The biggest criticism regarding “When a Stranger Calls (2006)” is that it feels like a 30 minute short that was stretched into a 90 minute feature. There just isn’t enough available material to do a movie about a babysitter receiving creepy phone calls. It gets old rather quickly.
I can't say I liked it, because I couldn't stand many of its gimmicks and a few of the stories fell flat. But at the same time, I can't dismiss this either because it can be terrifying and at the absolute least, it is one of the more ambitious examples of its ilk.