Hello Flavia,
It seems to me that this is not the first time your husband has disappeared for a day or more....what has happened in the past when you have tried to call him or text him to find out where he is? What do you think would happen differently this time?
What he is doing certainly is disrespectful, but the sad truth is that you have absolutely no control over him or his irresponsible actions.
Have you considered looking for even part-time work or work from home so that you can work toward your own financial security--for you and your children?
Can you turn the evening into a game night for you and the children?