Don't use Rentalcover.com, they are a scam. I made a booking through Rentalcars.com, and subsequently cancelled. However, was still charged $120 from Rentalcover.com within minutes of the booking, despite cancelling. Rentalcars.com say you need to contact Rentalcover.com. Of course you cannot contact them other than via online email and they don't answer your question but send you some badly worded automated message and direct you back to Rentalcars.com. What a scam. Don't give up though, if enough of us continue to fight for justice, this lot can be put out of business.