AIO over a prank call

So I was working and got a call from a No Caller ID and it was a girl who told me that my girlfriend was texting her boyfriend and to check her phone. My girlfriend lives in Wisconsin and I live in Illinois, I then got a call back saying that it was just a joke. Am I overreacting for thinking maybe it wasn’t a prank and they just played it off like one because they somehow knew my name and got my phone number.