I recently went to a car rental company and they asked for my insurance information. They mentioned that I HAVE to get their insurance, and didn't accept the credit card's insurance, which covers up to $25,000 for any damage on the car. I asked to see their policy which says I have to get their coverage, but they were unable to provide me with that information. On my rental agreement, there's nothing saying I have to get their coverage. Isn't this illegal?