A nurse from western Sydney was shocked to receive a letter from Centrelink demanding she pay more than $2000 in payments she never owed, as the fallout from the false debt notices continues to be felt.

Janette Suffield was sent the notice to repay $2350 in November and has now filed an appeal, The Sydney Morning Herald reports.

Ms Suffield claims the money in question is payments she was entitled to in 2015 while she was off work recovering from surgery.

"I seriously do not owe this money," she said. "I have been told I have to set up a payment plan to repay the debt or it will go to collections which to me seems ridiculous since I am appealing the debt."

Independent MP Andrew Wilkie yesterday said Centrelink debt notices are pushing some welfare recipients to the brink of suicide and has called on the Commonwealth Ombudsman to investigate faults with the new automated data matching system.

Mr Wilkie has received more than 100 complaints to his Tasmanian electoral office from people who had received debt notices.

"I've had four people now approach me... who I would describe as presenting as suicidal," he said.

"This is terrifying people, and we've got a government who is saying there is no problem."

He cited the case of one woman who received a debt notice of $69,000 - more money than she has ever received from Centrelink.

When she queried it she was told it was an error and she actually owed $3000, but Centrelink could not explain why, Mr Wilkie said.

Opposition human services spokeswoman, Linda Burney, told Fairfax Media the concerns over the new automated system were ongoing.

"The concern about the program expressed by people to my and my colleagues' offices has been huge," she said.

Ms Burney has called for the suspension of the automated date matching process until the issues are resolved.

"It isn't only unfair and cruel, it's poor public policy," she added.

Do you know more? Have you been sent a debt letter from Centrelink? Email Kate Kachor at kkachor@nine.com.au



With AAP