Angry Canberra residents were trapped indefinitely on the Victoria-NSW border when a sudden change in regulations blocked their route home.
It's left some sitting in their cars, and others booking into motels.
The ACT government says it has significant concerns and that there are serious problems at the border for people trying to drive to Canberra.
"There is currently a serious border restriction problem for people wishing to travel by road from Victoria, through NSW, to the ACT," a spokeswoman for Chief Minster Andrew Barr said.
"We have significant concerns that ACT residents, or those with an exemption (such as Federal MPs), to enter the ACT are no longer allowed to transit through NSW.
"These concerns have been urgently raised with the NSW Premier's office and the Prime Minister's Office."
Anne Cahill Lambert and her husband, Rod, were returning home after four months in north-eastern Victoria, where he was a medical director helping out because of the virus epidemic.
"We have our dog in the back of the car and all our goods and chattels. The rain is coming down and it's freezing," Mrs Lambert said.
Mrs Lambert said the rules for transiting through NSW suddenly changed, at two hours notice, on Thursday night, leaving them with invalid permits to enter NSW.
They were sitting in the car on the border hoping the situation would be resolved soon.
Ross Muir and his wife Helen were in the same situation but had checked into a $100-a-night Wodonga motel with no idea when they might leave.
They went from Canberra to tend to his father in his last days on a property on the north-eastern edge of Melbourne.
After the funeral on Wednesday, the couple decided to head back to their home in Chapman in the ACT.
They took all the right bureaucratic precautions for their return by getting a permit to transit through NSW back to Canberra.
But when they got to the Victorian border at Albury, the car was blocked.
The NSW police told the pair that the only way back to Canberra was via Sydney airport - and they would have to isolate there at their own expense in an approved hotel for 14 days before going on to Canberra.
Mr Muir said that what had happened showed disrespect by the NSW government for the ACT government.
"They are telling the ACT what to do," he said.
"The ACT is so low profile in terms of COVID-19.
"It hasn't been seen in the machinations between NSW and Victoria. The ACT is collateral damage."
The couple are not the first to get caught up in the confusion over the regulations, particularly as they change at very short notice.
Canberra removalist Colin Mitchell said his work was hampered because the NSW and ACT governments had different definitions of where closed areas were.
Mr Mitchell said the ACT COVID-hotline people said Batemans Bay was banned from the initial round-about on, while the NSW COVID-hotline people said it's only the Soldiers Club (where there'd been an outbreak).
The two governments "aren't talking to each other", Mr Mitchell said.