I need to Vent - Boyfriend kept interrupting me - I’m the rude one

So I’m trying to talk about credit cards to my boyfriend. I was looking at my score and while I have good credit, I want to keep working at it. (Good as in I’ll get approved for whatever I apply for). So I was trying to talk to him about getting a card to use for groceries and they have a card that gives you cash back on food. The WHOLE time I was trying to talk, he kept interrupting me, going into different rooms, and not letting me talk. Then I said that I was trying to talk to him about something and he kept interrupting me and he said “yeah about credit cards”. Then I said “I just won’t talk to you anymore then” or something like that. Then he walked away and called me rude! Like what?! This is Our future and we should be planning. It could have been a five minute conversation but instead he was rude and then called me rude 🙄🙄🙄