Is it necessary to contact a man who doesn't return women's text messages?

It's normal for men not to reply to text messages, just like women don't reply to text messages. He may be around the boss, or he didn't notice, or his cell phone is dead or something. Be patient. Some things are not like lottery tickets. Those who fail are rubbish. Men don't like impatient women either. Be patient with them, and they will be patient with you.