They offer a 100 % money back guarantee, which means if you get an uncompleted order, they will give you a full refund. But their biggest highlight is their 1 year replacement guarantee and "high retention" followers. They also have a fast turnaround time.However, they do not have a live customer support. If you have any concerns or inquiries regarding the service, you will still have to wait up to 48 hours to get a feedback.
Devumi's site is well designed - it's simple yet functional.