Last night, I couldn't sleep properly. Those messages from an unknown number were making me restless. Now also I'm thinking about those messages, standing under the shower. I want to know, why he messaged me and what type of help he needs from me. I really want to know. 

But how because I have blocked him? 

Should I unblock him? But how can I trust him? 

Maybe he is a fraud. But how can he harm me through the phone? I think talking to him over the phone is harmless. I'll ...