It would seem to me that a lifeline phone at home would resolve this issue. If a person were homeless, you might have a case, but even then there are places where a person could have an ombudsman work for them.
Any employment agency will be glad to make or take calls from a prospective employer on your behalf, and charge you a portion of your new earnings for the favor.
“I want to speak with Joe Blow, the candidate. Not with John Doe the employment agency clerk.”