A fairly wide range of choice for discount, but check the conditions: often they can catch you out. Also, websites often have their own discounts, eg "10% off first order" or student discount. Using these almost always invalidates the CompleteSavings discount.

They also try to catch you out wherever possible. Make sure not to forget to log Monthly Saver, etc. They won't let you off. Basically, it seems that the company makes quite a lot of their money from people who forget to use it but still pay. If you are on it, then you can make money from using this company---and I have made quite a lot. But just make sure to remember every month!

Chase up cashback if it doesn't come too. They're particularly bad for logging reservations. They only pay the cashback after the event, eg hotel stay. This makes sense: lots have free cancellation. But if you book 6 months in advance, they likely won't track it. Set yourself a reminder to check after your stay!

Customer Service is a bit of a joke. Basically they normally just try to do whatever they can to not pay you. Make sure you follow the Ts & Cs and you will be ok, though.

[Review left as part of promotion to win gift card]