I ended my account with you guys in August. Recieved my final bill in Sept saying I actually get credits back.
NowI got an email saying now I need to pay $6.10? I log into my account, and it still says my balance is $0.
Welcome to the Community
Are you able to open the invoice online? You should be able to see the details there.
I will also send you a PM so we can take a look at it together.