They had been trying to contact her for several days.

You will not be able to contact her for some time.

I've been trying to contact you for more than six months.

I've been trying to contact her, in your name, for the last hour without success.

She was not to contact her family for the next ten years.

You are the only person I can contact for this job.

"We have not been able to contact you for several hours."

Whom do I contact for questions and information about the study?

In some cases the police may want to contact you for further details.

Is there a city agency I should contact for help?