Selfish narcissist kept all our taxes.

We did our taxes & last year I worked half the year only because I gave birth to my son & went back to work after a couple months off. Before this my husband & I would split every bill etc I was 38 weeks & still working & paying bills with him . when I was laid off he paid for all of it I was off maybe 4 months. Anywho I trusted my husband & let him claim both kids because he does make more money than me so I didn’t want them charging him & we would end up with some money. I on my own I got 1,700$ he got back almost 13,000$ for our two kids I was so shocked and happy ! And no kidding the person doing our taxes turns around first thing he tells me is I hope u know ur not getting not even half of this. Like WTF ????? I told him I let u claim both kids trying to help you and us. I could have calmed 1 child and gotten atleast 6,800 !! and for him to say he’s not going to be giving me less than half is crazy. We had also planned to get a home with our money towards a deposit all of a sudden he wants a brand new truck out of the dealer ship ?! I’m so mad because that is so selfish I get that I got 1,700$ but that’s nothing to 13,000$ he is such an absent father which is why it gets me more mad like okay u paid for everything for 4 months but hes barely even around my whole pregnancy & is always out drinking I’ve dam near raised our kids alone. Than he starts to say y I’m asking for 4,000 that I’m selfish because I already got 1,700 and he says if u want me to give u money than u have to share ur taxes with me?! Like Does he not get that even if he gave me 4,000 he would still keep way more than me. I’ve thought about leaving him due to everything thing else he has put me through but this is such a slap in the face. I’m I wrong though is that all his money ? Should I not be upset? I’m I tripping are my feelings valid idk. Iknow his money and his truck is going to go to shit he doesn’t take care of anything because he’s an alcoholic narcissist. Why did I trust him again. He’s done this before last year we got back 7,000 and he gave me 2,000 bought himself a nice bmw and told me good luck finding a car. He rides in a better car than me I own a 2 door Honda old and I take his everywhere. But that doesn’t matter as long as he’s looking good nothing matters and I’m selfish. I already see myself leaving his ass and not letting him claim none of our kids next year good luck paying !