The South Australian Liberal Party has apologised after robocalling household and mobile phones from 6:00am, waking up residents to ask them to rate the state's performance.

Key points: SA residents received early morning calls asking them to rate the State Government

SA residents received early morning calls asking them to rate the State Government The Liberal Party has blamed a "technical error" for the calls

The Liberal Party has blamed a "technical error" for the calls The Transport Minister was among those who were called at home

State party director Sascha Meldrum said a "technical error" meant calls that were meant to go out yesterday afternoon instead were made early this morning.

"I sincerely apologise for any inconvenience or annoyance caused by these early morning survey calls to households," Ms Meldrum said.

The call asked if "South Australia is generally heading in the right direction or do you think it is seriously heading in the wrong direction?"

Liberal Premier Steven Marshall's office said the survey calls were not from the Government and instead referred inquiries to the party's director.

Treasurer Rob Lucas admitted the robocalls were a "blunder".

"Without knowing, I suspect that someone's backside is going to get a boot, as it should," Mr Lucas said.

"I suspect someone has pressed the button for these … for 6:00am instead of 6:00pm.

"It shouldn't have happened, no sensible person would be commissioning polling or robocalling at 6:00am in the morning.

"It's only guaranteed to irritate people."

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'We're all a bit unhappy this morning'

Caller Linda said she was in a deep sleep when she got the call on her landline.

"I wasn't too thrilled and I actually panicked a bit thinking, 'Oh my God, what's happened to someone?'" she said.

"… You have no right of reply to say anything because it's just a robot message, so on behalf of the South Australians enjoying their night sleep out there they can tell the Government or whoever that we're all a bit unhappy this morning."

Transport Stephan Knoll was among those to get a robocall. ( ABC News: Nick Harmsen )

John from Kersbrook was having a shower when he got a call on his home phone.

"Normally that indicates something bad is happening. It's very rare that that rings," he said.

"I picked it up and it was an automatic robot message."

He "hung up in frustration".

Transport Minister Stephan Knoll was among those to receive an early call.

"I got one at 6:00am as well," Mr Knoll said.

"I was otherwise detained at that hour, and it went straight through to voicemail. I'm not sure who it is.

"As soon as I saw it was a robocall, I think I did what a lot of people do.

"I'm not even suggesting it was us in the first place, but I certainly understand why people would be frustrated."

During budget estimates this morning, Premier Steven Marshall distanced himself from the robocall incident.

It comes as Labor accused the SA Liberal Government of breaching the laws that govern telecommunications.

"Steven Marshall and the Liberal Party have managed to annoy hundreds, if not thousands of South Australians, with phone calls in the early hours of the morning," Labor's government accountability spokesperson Tom Koutsantonis said.

"It is clear why Steven Marshall and the Liberals are robocalling South Australians — they're worried their budget of tax hikes and privatisations is a dud.

"Steven Marshall should apologise to the people of South Australia."

South Australian senator Simon Birmingham said robocalls were "part of modern technology and practice".

"They're used to get a better understanding of people's views, opinions, and to gather information," he said.

The Australian Communications and Media Authority (ACMA) has been contacted for comment.