Robert Levinson’s family were left “angry and devastated” when the longest held U.S. civilian wasn’t among the five Americans freed in a January prisoner swap with Iran.

“We know that the government is working hard on it, but it’s not acceptable and it’s not enough. It will never be enough until he’s back home with us,” said Robert’s daughter, Stephanie Curry.

Levinson went went missing from Kish Island in March 2007.

A few weeks after the swap, Levinson’s wife, Christine, and son Daniel, met with FBI Director James Comey, and later with Secretary of State John Kerry and President Obama.

The same old promises were made, the family said.

“Iran has agreed to deepen our coordination as we work to locate Robert Levinson, missing from Iran for more than eight years,” Obama said from the White House on Jan. 17, a day after the swap.

The White House believes Levinson is no longer in Iran, and the Iranian government continues to deny knowledge of his whereabouts. But the Levinson family remains convinced he’s in Iran and are demanding “a more forceful dialogue” about Levinson.

“Our family believes there are people in the Iranian government who know where my father is,” son David asserted. “That was the last place he was seen and there is absolutely no evidence that he is anywhere else.”

The ex-FBI agent had traveled to the Mideast for the CIA on an unauthorized intelligence-gathering mission and met with American fugitive Dawud Salahuddin on Mar. 9, 2007. He was the last person to see him, FoxNews.com reported.

The devastated family is still in disbelief they will soon mark his ninth year missing.

“Even one day without him is too long and us having to continue to live this nightmare is unbearable,” David told The Post.

Levinson, who turns 68 on Thursday, has missed three of his seven kids’ weddings and has yet to meet three of his grandchildren.

His clothes sit untouched in the closet.

“What gets us through each day is that we believe he is coming home. We have not lost hope and we will never lose hope,” Curry said.

David’s wife, Sophia, even embroidered a blue tie for him to wear on their wedding day this past October, fully expecting him to attend.

About 400 supporters turned out to a Saturday rally in Coral Springs, FL, holding yellow placards that read #WhatAboutBob.

There were 14 speakers, including retired FBI agent Ellen Glasser, who insisted that the U.S. government should have pushed Iran harder to release Levinson.