The unity deal between Alexandria Ocasio-Cortez and Rep. Joe Crowley, the man she defeated in a stunning Democratic primary upset, is showing signs of severe strain.

Ocasio-Cortez took to Twitter Thursday to claim Crowley, who is also the Queens Democratic Party chairman, is ducking her calls while remaining on the November ballot as a candidate of the Working Families Party.

“@repjoecrowley stated on live TV that he would absolutely support my candidacy. Instead, he’s stood me up for all 3 scheduled concession calls,” Ocasio-Cortez tweeted. “Now, he’s mounting a 3rd party challenge against me and the Democratic Party- and against the will of @NYWFP.”

The two have not spoken since Election Night on June 26, even though it’s customary for the losing candidate to make a concession call.

But amid the chaos of Ocasio-Cortez’s upset victory and phone tag between the two campaigns over the past two weeks, they have not connected.

A Crowley campaign official said the rival campaign never provided her personal phone number.

In a rebuttal tweet, Crowley dismissed Ocasio-Cortez’s charges as nonsense.

“Alexandria, the race is over and Democrats need to come together. I’ve made my support for you clear and the fact that I’m not running,” he wrote. “We’ve scheduled phone calls and your team has not followed through. I’d like to connect but I’m not willing to air grievances on Twitter.”

Crowley also said he would have to use a maneuver that amounts to “election fraud” to get his name removed from the Working Families Party line.

“Lots questions about WFP line. Was honored to have their support. I’m not running. For record you can only be removed from the ballot if 1) you move out of NY; 2) die; 3) be convicted of a crime; 4) accept a nomination for another office (in a place I don’t live),” Crowley tweeted.

“I don’t plan on moving out of New York, have a clean record, hope God’s will is that I don’t die, and won’t commit what I honestly believe to be election fraud,” Crowley added.

WFP executive director Bill Lipton sided with Ocasio-Cortez in the dispute.

He said he asked Crowley’s team to yank his name so Ocasio-Cortez could become the WFP as well as the Democratic candidate in the race for the 14th Congressional District seat, which covers portions of Queens and the Bronx.

“They refused to consider it,” Lipton said.

Lipton also said it was laughable for Crowley to claim that using a time-tested maneuver to get his name off the WFP line amounts to election fraud.

“Nobody knows how to manipulate the election law better than the Queens Democratic Party. They just don’t want to be helpful,” he said.