I tried to cancel before I was going to be charged annual Prime membership fee and it took me days of calling various numbers without any answer. I finally ended up calling the UK number and was able to cancel, however I was charged $160 in international calling fees that of course I will never get refunded for. Their US number is a scam and there was no other way to reach a human unless you call the international number and random directory dial because of course nobody picks up when you dial the cancellation option. I would not recommend this service. I used it the 1st year and saved a little on a trip, but on the 2nd year their deals weren't good enough for the locations I was traveling.