Reliance Communications — negligence in return of security amount

sir,
I applied for reliance wi-max internet connection in september.Due to certain complications in network company could not install the net connection at my place.Though the amount of Rs500 was already charged as installation amount by then.When the company could not install the net,it was told to me by the person incharge that the installation amount will be returned in 45 days.Almost six months have passed yet I am waiting for the cheque.Though I have called the executives a couple of times,I am still waiting for my cheque.Please take necessary action.

CUSTOMER COMPLAINT ID(given as on[protected] [protected]