Online Quest Save me!

"Does anyone read what I write?" – a message from an unknown number breaks the monotony of an ordinary evening.
At first you ignore the messages, but they get more and more creepy.
"I woke up in the basement chained to the wall."
Is this a bad joke?
"I don't know where I am!"
You are very scared. Who is this person and why does he have your number?
“I had this cell phone next to me, but I think it was hacked.
All functions are blocked, including calls.
Could this be the victim of some violent psychopath?
Do these things really happen?
"I only found this number in the phone book..."
What if a stranger's life really depends on you today?
"Please answer me!"