@Jaguar,
There is some credit in the number and true i received two "successful" confirmation texts.Final step was diverting all calls to 0750008000 which i also did.Guess what,from then on,people calling me from YU lines could not go thru and the message was "error in network connection".This went on until i cancelled the divert.I am not giving up and as you've suggested,let me try the process all over again.....As for calls to 100,all i get is voice service which is of no help while calls to helpline 0750100100 went "the person you have called is not available" (HOW???

).Most unfortunate is there is no e-address where i can post my complain(Again, HOW in this age and time???).....Very Pocket friendly though.
Nothing great was ever achieved without enthusiasm.