Very supportive prior to renting, Rentalcars.com failed to let me know there was a 30 Euro Location Fee Charged by Dollar Car Rental on site at Dublin Airport. I had no choice but to pay this, and I've heard nothing from Rentalcars.com since then. I cant' log in to my own account, for they never sent me the needed code, and no subsequent needed code has been received from them although their website tells me they have sent it each time I request one. Rentalcars.com and Dollar are not companies I would recommend to anyone.