GoodToGo hackers?

I use the 520 toll bridge maybe 4 times a year. I just looked at my GoodToGo account to make sure my most recent trip was automatically paid and noticed there were multiple charges. I’m talking bridge and lane tolls at least a few times per week. The charges go back for months! The GoodToGo office is closed today, but wondering what the hell is going on? Has this happened to anyone else? Did someone hack my account? Maybe someone has the same sticker number as me? It says I can dispute it, but how do I get access to the photos of that car?