I know dudubu.com since months now its very famous site for doing mobile recharge.
I came to know about dudubu because they had started a campaign of free recharge of 10 rs for all the new users which was a huge success and i recharge my all family mobile numbers from this site from the day it had offered that campaign 10 rs recharge for free.
i have done multiple recharge from this site till now for prepaid and postpaid both.
I like the service because its quick and fast and without any delay they send the recharge directly to our mobile.
we do not have to care about out money if the recharge is not done, they will refund back the amount to us as per their process.
It is a very big competitor to the other recharging sites like mobikwik freechage paytm.
i personally like dudubu because their website is user friendly and i hardly have seen any downtime on their website it means i can now recharge my mobile any time 24 by 7 and 365 days without paying anything extra also some time we can apply promo code and get discounts and cashbacks.