Brittany Ferry services remain suspended despite talks over the weekend and passengers are advised to check the website for updates.
The ferry company suspended services on Friday until further notice following industrial action by crew.
A statement released today says that despite talks between management and French crew unions, no agreement has been reached.
The only route unaffected is the Poole-Cherbourg passenger service which is operated by Condor Ferries.
The company is on a cost-cutting drive following three years of losses and some staff are unhappy about proposed changes to working terms and conditions.
The Brittany Ferry statement said: "As yet, no agreement has been reached which will enable the company to resume services which therefore remain suspended, except the Poole-Cherbourg passenger service, which is operated on Brittany Ferries’ behalf by Condor Ferries.
"Passengers are being asked not to attempt to contact the company by telephone but to visit the website for the latest information.
"Because of this indefinite stoppage Brittany Ferries is recommending customers to travel to Dover where they currently have special arrangements in place with P&O Ferries and MyFerryLink to accept Brittany Ferries tickets.
"A full refund will, of course, be given for the unused Brittany Ferries crossings. Brittany Ferries staff are at Dover and Calais to assist passengers."
Updated 12:00pm, September 24
