Vodafone — porting code not given

dear,sir/madam i am student of iti collage i have a vodafone number :-[protected],[protected],[protected],[protected] i m use this number for last 5 years and company not given porting coad because vodafone call rate so high i want to my number in aircel but vodafone not given porting code please solve my problem i m student not a worker so i can't afford this call rate . please sir/madam , solve my problem rohitash patel [protected] [protected]