Is communicating with your spouse important?

First off let me just say that I know this is a “small situation”

After me and my husband left the meeting I asked him to get ice for my wine.usually he would refuse for me to spend any money because we get food stamps. So we stop at Dairy Queen and I tell him why don’t we just get a bag of ice? He says I’m getting two cups of ice from here. I said let’s just go to the store I get more ice. He insisted on going into Dairy Queen. So me and the kids are sitting in a hot car for a minute now so I blow the horn to get his attention. (Maybe not the best choice but he didn’t even hear it anyway) so I go in Dairy Queen and ask what’s taking so long. We have no money! So he says I’m getting something. I said you didn’t think the kids wanted ice cream or what about me? He says I’m not getting anything to eat I’m getting something to drink and go back in the car your embarrassing me. I have to ask permission for every single dime I spend even if it’s MY MONEY. And it’s not vice versa. He can buy a four dollar root beer float when we have less than 45 dollars to our name without my permission and feel like it’s ok and I shouldn’t act out about it. So I go in the car as I’m told to do and I leave it alone until we get home. So before I started talking to him I prayed to Jehovah for strength and guidance while talking to him. I start telling him how I feel and he says it was no reason for me to react like that. I told him communication is everything and had he just told me he wanted to get him a root beer float I would have never wondered what was taking so long and never came in there. And never “embarrassed” you. But instead of letting me know simple things so that I won’t be in the dark he just gets mad at me when I start asking him those “why when and how” questions....this happens way to often and in the end he always tells me I’m acting crazy. If we had better communication we would be a way better couple. And he never asks me to buy anything or discuss how he spends our money with me. I think that’s very unfair! I can’t buy a ice cream without him jumping on my case about driving somewhere extra and spending a extra 1 .08 that I didn’t need... someone pls tell me I’m not crazy 😭 I just want to feel equal and not be left out! It’s very hard not to upset him. But how am I supposed to know what’s taking him so long while we are in a hot car if he doesn’t tell me😭😭😭

Update:he usually gets right for me on his time...he promised he would tonight....