Scary phone call at work..

Sat night I was closing down the store it was around 1130 we were running late. THe phone rings which is weird because we're supposed to be out at 11. One of the kids picks it up and sayz they want to speak to a manager. So the guy on the other line asks me if we sale shirts, I was like yep, pants, yep, boxers, yep, shoes, nope, socks, nope... He says welll then you pretty much sale the whole outfit and I was like yep. THen he asked if his paycheck was in, and I asked well who is this. He replied with JOn, Jon Locka. I said well we dont have a Jon Locka who works here. THen he asked if we were closing the store because he really wanted his check. I could hear voices in the back ground but they werent people laughing. I was like who is this more sternly, then he said, you know who this is Michelle, you're the asshole who fired me. And I was lkike who are you, he was like this is jon locka and I want my pay check. I have never fired a Jon locka. It freaked me out when he said my name. Really unerved me. So then I said well I have to get back to closing and hung up on him. I told the kids and Jake said no worries Ill walk you out to your car. I was really upset that they knew my name. Until Angela pointed out I probably picked up the phone the way I always do, Hi this is Michelle. I couldnt remember since it was so late I might not have. We have been pranked called by one of the girls exboyfriends who only worked at day a lot lately but I wasnt sure if it was him. when I told kyle the next day he was like yeah some guy has been calling and saying do u sale whitie tighties a lot lately over and over again. It must be the same guy. I'm still upset though...