@scandrof I started getting that on my mobile. People calling me back that I had not called.
One guy who called me back and found I hadn't called him actually texted me back later to say he got a second call from my number and it was from "Amazon" confirming his prime subscription. A common scam that I've come across too.
Obviously my number was being spoofed for spam calls. I wasn't happy!
After about 2 months it died down thankfully. Not sure what you can do about it.
