How do I make Siri always call one number to a contact with numerous numbers

Following up on deggie’s reply, Identify the phone numbers in your own contact, and then have your wife use those references like call my husband at work or call my husband on his mobile, or use whatever field that you use in the contacts app to identify those numbers.

I say something like, call my wife at home, call my wife at work, call my wife on her mobile depending on which number that I want to use. I have her contact set up with work number, home number and mobile number.

Have your wife say, "call husband on iPhone" or "call husband at the office" or something similar.