Just lovely. Despite being a long-time Mint customer (and currently pre-paid for quite some time into the future) I fully expect to get screwed in some substantial way by this.
We really liked them and had prepaid annual for a few years in a row, but last winter I had to use their customer service for the first time and it was one of the worst CS experiences I've ever had. It was bad enough to leave their service completely when our year was up.