something suspicious here
possible a stolen unit so check it out with the police first
if legit then take it to a phone shop and have it set up properly
Help us out.
What device?
We have no devices, we are a question answering service only.
It sounds like you may have a telephone problem, maybe.
Perhaps you might ask your friends for the names of the phone systems in your area, and then call each of them to ask your question.
God bless your efforts.