Something weird's happening today!

So this afternoon, while I was waiting for my personal trainer, Nick, to arrive to take to the YMCA, and my phone was on and it started dialing a phone number. Later on, an hour and a half later, the person with the number texted me and it apparently said something about a lady named Caroline. I'm not sure who she is exactly. I'm really scared about this! So I told my mom and the person started calling me and when my mom answered, the person was like, "Are you Caroline?" My mom said, "I'm not Caroline! You must've got the wrong number." And then, after a kid asking, "Mom?", they hung up. So my mom took my phone and blocked their number. Later on, they sent us a voicemail and when we played the voicemail, all we heard was nothing. They kept sending voicemails to us every few minutes. This was all that happened so far since this happened a few hours ago. I'll let you know when this keeps going on. Bye, guys!