I received a call from some one called Mathew Eastman warning me to call urgently back for some thing which is emxtremely time sensitive and in case I do not call back I should be prepared to face the consequences.
You forgot to tell us who "they" were!
If they were so helpful why did you forget that very important fact?
Is it possible you are merely shilling for that phone number, yet do not know how to describe the calls?