I feel your frustration. Its a circle, you're frustrated, the kids feel that and demand more attention. I would suggest finding something that you and your children can do together, start a craft project and while they're finishing it you get to catch up on chores so that at the end of the day you'll have some time to yourself. You'll be having fun with your kids, they'll get the attention they need and you'll get some alone time.

I don't know how old your children are or what their interest level is, but if you can find something that's just fun to do with them for a half an hour it will make a world of difference to both of you.