We have had a unlimited plan for over 1 year. We are extremely please with this plan and we are extremely pleased with the service. We have a plan on both of our cars. Our service is 9.95 a month for each car. We also o have one drafted from checking and one is taken out of our Discover. The one drafted was 9.95 and the one taken on Discover was 20.00. Why the increase? We have not been notified of any increase. How can we correct this?