Airtel Mobile Prepaid — Deleted my mobile number from the company

Dear sir/ madam i am ankit gupta from indore (m.p.) i had summited to my documents and fees for the change of my sim conection ([protected]) from postpaid to prepaid, on the date of 22 september 2009.
and the time of taking this documents and fees they told me that this plan will be change into 24 hours. but still it could not be done. i was go their office from last 1 month and more but they are not talking ceriously
and it is my company mobile number and it number was alredy distributed in the my professional market and also person. so i am talking very loss.
and i can not do work without my that number , but company has deleted that number.
please kindly help me
my alternet number is
[protected]