WICHITA, Kan. (KAKE) - "I got a call from a carrier in northwest Kansas this morning, saying that things had gotten really good for the first several weeks after the broadcast," said Christine Pruitt with the American Postal Workers Union.

Pruitt is talking about a KAKE News investigation in March exposing the horrible conditions inside Wichita's sorting facility, overrun with mail, and nothing the workers could do about it, which was causing major delays all across the state.

Pruitt says that after the story aired, things got better, at first.

"Now they're back to being severe delayed, and he's wanting to know what they should tell their customers about why the service has returned to being so horrible," said Pruitt.

Tuesday, after similar issues in other cities across the country, U.S. Senators slammed Postmaster Louis DeJoy, demanding answers.

"You've got weeks, not months, to fix this. And if you don't fix it, 36% on-time delivery, I don't think you're fit for this job," said Senator Jon Ossoff.

"Do you have one for Nevada seniors? So, you didn't look at how it would impact my seniors. That's unacceptable," said Senator Jacky Rosen.

DeJoy had a slew of reasons for the issues in different cities, largely blaming his consolidation plan to save money – a plan Pruitt suspects will soon close the Wichita branch, making delays even worse than they are.

"We had to move 2,000 people from all these different plants into one location. We have strict requirements as to when they move. It's a big facility that we opened up; we have inbound transportation issues," DeJoy said.

The hearing got even more heated when DeJoy admitted to ignoring a letter from Ossoff.

"Let me just give you just a friendly piece of advice. You should personally read letters from members of the U.S. Senate Committee that funds and oversees your operations, particularly where you are failing abysmally," Ossoff said.

Pruitt says, in her opinion, the hearing proved what she's been saying all along, that DeJoy isn't fit for the job, and there's only one way to fix it.

"Congress can't fire him. The President can't fire him. Only the Board of Governors can fire him," Pruitt explained. "My hope, really, is that the public understands that the employees of the Postal Service are doing the best they can. But we need their help. We need their help and their outrage to say, enough is enough. Quit destroying this."

To file a complaint about theft, fraud, or waste at a USPS facility or by a USPS employee, contact the USPS Office of the Inspector General (OIG).