Has your ex's girlfriend ever called you?

So this happend to me recently and I can't help but overthink it. Here's a little backstory, six months ago, this man ghosted me after being in a relationship with him for 2 years na nikakubali tu peacefully and went on with my life, we haven't spoken since and neither have i tried to reach out. Then just the other day I was getting calls from random numbers asking who I was, which was strange. But there was one number in particular that caught my attention. Since I have trucaller, it brought up a girl's name that looked way too familiar and I knew it was his current immediately, so I didn't pick cuz I was in shock almost.

How do I know it was his current? That's a good question, you see, a couple of weeks before this man ghosted I found chats on his phone with this particular name saved and confronted him about it na let me tell you maina, the gaslighting i faced was crazy. Anyways, because ni kama napenda drama I decided to call this number back and confront her, juu why the fuck is she calling me, opening wounds that I'm still nursing?? Plus I was curious. So I did, I pretended not to know her and asked who she was, to which she confirmed her name and i was sure it was her sasa, and why she was calling me. She then proceeded to tell me that she has no idea what I was talking about, and that she's never called me, so I ended the conversation there. Now I'm left feeling like a crazy lady msm. But yeah, I've been thinking about it a lot, have you experienced this?