@NaughtyJay,
Well Jay it seems that they are playing Tambola at Jet Air HR department!! Every recruiter is given a chit with nos written on it(and those nos have been allotted to the applicants) the HR manager picks a no.randomly ,calls it out loud and the recruiter who finds that no to be on his/her chit cancells tht no from the chit and sends an email to the candidate bearing that no !!! Cant say till when they will continue to send out call letters (Their game,their rules and their time!!).Probably they'll continue till they find a clear winner amongst the recruiters..!! (The one who checks out every no. on his/her chit)!!