My phone is giving out ghost phone calls to random numbers, mostly from my area code. They aren't in my call logs but people keep calling me asking if I was trying to reach them. AT&T LG G4

So for the past month or so I keep getting calls from random numbers, mostly from my area code but a few others. They say they got a call from my number and were calling back to see if I was trying to get a hold of them. I don't know any of these people and my phone does not say it made any outgoing phone calls. I don't know if this is a phone issue or a carrier issue or what, but it's pissing me off and wasting mine and other's time. I recently moved out of my area code so I don't know if that has anything to do with it but it might. Could this also be someone playing a prank on me? That's unlikely though because I don't actually have any real friends lol. I have AT&T on a family plan with an LG G4, completely stock. There was also a software update pushed out somewhat recently by LG, not sure if that totally coincides with the phantom phone calls though. Any help would be great, thanks!