Reliance Communications — reliance communications refund or extra amount

Address:

Pune, Maharashtra

After getting your business closer information, i have port my number to another service provider. Before porting i have paid your bills twice. Now i have received your last bills with negative payment of rs 496/-. Please check refund my excess payment made to you & security deposit.
My details as below
Name : prashant prabhakar bhong.
Mobile no : [protected] relationship no [protected]
Last bill no mh[protected] dt 15th nov 17

My bank details for refund
Bank account no[protected]
Bank name icici bank - kothrud branch
Ifsc code : icic0000338

Please look into it and help me.