Who called from 9840012600

i am all  so  got a phone call from this number ...more then  two  times ..if i say hallo the call was disconnected  ...pls help me ..

i got a phone call from this number ...more then  two  times ..if i say hallo the call was disconnected  ...pls help me ..

it is from airtel customer care

I am getting the call frequently but no reply when I answer.They are just making us to callback and collect the charges from me.These a tactic adopted by airtel to boost their revenue.

I get a call from this number 3 times when im saying hello,hello.... they didn't respond
the number is +91 98-40-012600