Unusual break up

My ex ended our relationship after she abruptly hung up on me to answer another call. When I asked who it was she went silent and said her mom and got off the phone. She then called back and said I had no right to ask who was calling her and ended things. I have no idea what this means and I can’t get over the thought she’s not being truthful.. Today she blocked me from everything after asking me not to co tact her again. She says me trying to reconcile is too clingy and she doesn’t want anything with me. Yet more confusion..