Quote: How do I go about upgrading my contributions to 'Big Supporter' level?
Since you are already a supporter, Bobby may need to change the recurring amount. I am not sure if subscribing with the Big Supporter level will replace your existing recurring charge.
So wait for Bobby to chime in first, or you may end up paying twice!
Something like this happened to me when I changed my recurring contribution to a charity from quarterly to monthly. I now get billed twice four months each year, but I just let it be since I was thinking about giving more anyway.