An inconvenience of a service plan

I called on a Friday to confirm that all is in order with the policy, I told the agent I have appointment booked for Saturday morning. Now at the dealer and when they supposed to authorize they tell the dealer they have network problems they can’t assist. They’re not providing alternative it’s just wasted time on my side and also I need this car serviced for planned trip Monday now I have to delay that as well so I can go back on Monday.