I've had a couple weird experiences in the last week with my iphone 4s. The first happened when I got a call from a number I didn't recognize and when I answered they asked me why I had called them. I definitely didn't call them. I even checked my call history and it doesn't show that I called anyone at that number. The second event happened today, same thing except the person texted me asking why I had called them. same thing, I hadn't called and no history of any calls. the extra weird thing is these calls are coming from similar numbers to mine (i.e. first 3 digits - not just the area code- are the same as my number). Has anyone experienced this before? it's really weird.