Airtel friends prepaid paln
Connot join a friends group

I have bought a new airtel friends prepaid card and so want to join in a group of three, as given by the network the group password is not valid, though there are three sim cards, viz 9960478224, 9960478225 and 9860833867 that are in the same group and very much working whose password is 1431439706. i have called the customer care several times but they have no given me the right solution what so ever. my sim number is 9766909041.

i hope this complain will serve me some good.