How to get the new Airtels 4mb for N10 only

Airtel has introduced a new cheap data plan for those who don't spend much time on net, or people who are not heavy users like me. This plan was made to cure the need of impromptu chats or emergency.
It's 4mb for #10 valid till midnight of the same day. 

Dail *758*10# to get 4MB for FREE!
This internet bundle is valid till
midnight, hurry now to enjoy while it lasts at
just 
N10 ONLY! Keep visiting for more cheats update. 
ENJOY