Consumer Redressal

2 months back I bought a motorola handset and soon I started facing issues of WiFi and Bluetooth. I reached nearest service center ZA Mobiles HAZRATGANJ .They fixed my handset but completely mutilated and destroyed its back panel. When I informed they said the same would be replaced and that order has been placed on 8 th January 2015 I reached the service center on 23 rd they said to come on 27 th . I reached on 27 th they said that order has been placed on 23 rd. It has been over a month and yet I have not got my complaint resolved. Tried to contact the customer care thrice,no resolution. E mailed on complaint center no reply. what am I supposed to do. Does it take this long to simply replace a part.My order number is WFP/MG/14/01904