Idea, Phone No. [protected] — Non activation of mobile number

Sir/mam, I have subscribed the Idea cellular mobile number i.e. [protected] on 14th august against the payment of Rs. 500/-. But the company hasn't activated my number till 19th august and on 20th august the number has been issued and activated to some one else. Sir/mam, I want your help to get my number because my goodwill is attached to this number as i have circulated this number in my whole circle.my contact number is [protected].