Cooksey36, thanks for reaching out about your billing issues.
If you didn't have service from December-January 8th, that is the only time you shouldn't have been charged for service.
There is no fee to change your plan. There may be prorated credits or debits to the account based on what package you change to and when it is done in the billing cycle. Let's take a look at the $74.99 package offer and your other billing concerns. Please send me a private message with your full name, address, and account related phone number so I can help.