Call from NBC

Sorry if this isn’t the right place to post this but I’m so confused right now. I got a call around 4:59 from NBC, though the name on the call is in French I don’t know if that’s right or not, but I was in a class so I had my phone on silent and couldn’t answer. They left a voicemail at 5:39 asking me to confirm large purchases I made, which I did make since I paid rent and need a new phone and tablet for school, but they left me a completely different number than the main one on the website. It might be a scam but also I don’t know how they would have known I made two purchases and I really need some insight as I have no one in real life to ask this. Sorry again if this is the wrong place to post this