I have tried to apply a job in 100s of companies, but never ear anything from them.... even if there is an opening position, if I go and ask the manager; the answer comes "We are not start calling people yet." week after week I try to call the company, but the answer is the same. what should I do?

I have tried to apply a job in 100s of companies, but never ear anything from them.... even if there is an opening position, if I go and ask the manager; the answer comes "We are not start calling people yet." week after week I try to call the company, but the answer is the same. what should I do?