I've never had this situation happen, but if I was paranoid enough about it, I'd set up a free checking account on ally.com specifically funded with the exact amount that the insurance company was going to pull out, and let it go.
I've got several accounts (both checking and savings) at ally.com, with no maintenance fees at all, and once you have one account created, you can create more accounts online whenever you want to, all available under your primary login on the website.