cant change plan

[CCart]

One a 90 Plan which expires April 30. Account balance is zero. Need to chnage to a $5 plan for 5 days since I'm cancelling the account. It will not allow me to change the plan since there isn't any balance (money) in the account. tried making a payment, but it defaults to the 90 Payment amount. How do I change the plan and pay for the 5 days ($5 plus taxes)?

[Luddite]

@CCart Noticed your post languishing. There is no $5 plan; cheapest is 10 day text only for $11. Make a payment for that amount then send a private message to a moderator to have your plan changed.