A group of Port Lincoln Marina residents are unhappy about requests to pay "unfair" amounts of backdated lease fees for their pontoons.
Residents of properties on channels between Island Drive and North Point Drive, and Smada Court and Kestrel Place that are not freehold and have lease fees to place a pontoon on the water.
A major issue arose when a 20 year lease agreement expired in 2008 the state government reviewed the annual fee with residents seeing increases of up to 1300 per cent.
Resident Brian Henson is one of the affected residents who saw the units he lived in going from paying $308 between them per year to $3900 between them.
Mr Henson said residents were advised by then Transport Minister Patrick Conclon not to pay anything until the matter was resolved and five years later the fees were reviewed with reductions in fees of 70 per cent or more.
He said the government had asked residents to pay backdated fees, but this included the higher rates from the first five years.
"The problem at the moment is the government would only backdate these fees to 2013 and they still have sent letters of demand on all residents affected to pay the exorbitant fees across the first five years," he said.
"The threat is if we didn't pay by last Friday, we are in breach of a contract we haven't signed and they have threatened action to remove the pontoons at our expense."
Mr Henson said residents were not against paying the revised fee, but paying those earlier fees was unreasonable.
He said there had not been a result from appealing to the current government and the situation has caused frustration and emotional stress for a lot of people.
"Newer owners of the affected properties have inherited the debt which is causing much emotional and financial stress," he said.
Member for Flinders Peter Treloar said this had been an ongoing issue that was yet to be fully resolved.
"I continue to meet with the Minister for Transport Stephan Knoll regularly and as recently as this week raised the issue again with him," he said.
"The Minister indicated he would give the matter some further consideration."