inability to port from vodafone pre-paid service to aircel prepaid service

Location/place: chennai,tamil nadu

Name of company/service: vodafone/aircel chennai

vodafone sms to me on 8th sept.2012″your porting request vt 689998 dated 5th sept.has been approved.we ‘ll communicate porting time shortly.no but,no further communication from vodafone..aircel sms to me on 8th sept.”your request of mobile no.portability is approved.date &time of activation is 09/08/22:32:00.but i am unable to activate my mobile in aircel.my mobile no.9445157168.