If it's a debit card, you can use Serve.
If you have a Softcard-Serve, you can use a credit card.
I know that this blog is extremely hated here, but here are some ideas as well.
http://millionmilesecrets.com/2015/0...ts-each-month/
In addition, you might be able to prepay some bills by adding just a few cents if there's an online form for it.