The Mobile Store — Poor customer service

Consumer Forum,

I had purchased one airtel sim card from the mobile store located in Lucknow.The adress is:Shop no.32, 33, 34B, Pragati Bazar, Kapoorthala, Lucknow.226024.The store manager is Sonu Mishra.
They asked me to submit my residential proof.Initially they asked me to submit photocopy of the document but later asked to give the original document.I had completed all the formalities.But they did not submit my documents to the airtel office and so my number has been de activated.
Now the store person have denied to help me and not returning my document too.They even mis behaved with me when I went there.
My sincere request is that serious action must be taken against such irresponsible people.