Bad service

Took my car in for a service today only to be told my 360 plus maintenance plan had expired. When I called customer car to check and ask why I had not been sent a reminder the response was "it is your responsibility to keep track" which I agree to some extent. However every other policy I have I get a notification which is a way to encourage clients to keep their business and as a value add. I have been their client for almost 10 years and have referred numerous family members to them - they have lost me as a client and any potential business I could have given them! I am furious and disgusted at this lack of courtesy and service