When a call cannot be completed, it usually means that the system is overloaded or disrupted in some way and was unable to cause the phone at the other end to ring. Sometimes it means that you dialed the wrong number.
A literate person. Someone who cannot read and write is called illiterate.
A drop out..........
Someone who lies almost anything, even the smallest things.
High school grad. There is no title given to a person with only high school . In today's world that is the barely an education.
You call them illiterate.
HS Grad, assuming they completed that.
Ethical.
The belief/outlook is called Fatalism and the person would be called a "fatalist".
unbeatable
You call them 'mute'.
The person is a blackmailer.
can you call someone a welth of knowledge