Yellowstone National Park

When renting the car, I was advised to purchase full insurance and upgrade the model, which I declined because I had already bought insurance in my country. However, the front desk added roadside assistance to the rental agreement without informing me. I thought it was part of the deposit and signed it. When returning the car, I realized they charged an extra $90 for it, even though I already had roadside assistance with my insurance from home. I wasted $90 unnecessarily.