There are currently no trains Exeter St Davids to Newton Abbot because of poor weather.
The delays will last until Wednesday 5 February due to major damage caused by the weather.
Passengers have been advised to use Stagecoach South West buses on reasonable routes.
A Stagecoach South West spokesperson commented "We have not currently had an approach from First Great Western with regards to accepting their train tickets on our bus services. Therefore anyone wishing to use our buses instead of the train will need to buy a ticket in order to travel."
Several trains running between Exeter and Newton Abbot have been cancelled due to extreme weather.
Emergency engineering work is needed to repair sections of track damaged by the poor weather conditions being experienced between Exeter St Davids and Newton Abbot.
First Great Western have said that because of this damage, trains are unable to run between Exeter St Davids and Newton Abbot.
This disruption will continue until the end of service.
A limited replacement bus service is in operation between these stations.
Journey times may be extended by up to 60 minutes.