Maruti Suzuki India — repairing of car

Address:

Mumbai City, Maharashtra, 401 107

Dear team

I have given my grand vitara to m/s paramount wheel - mira road - mumbai - maharashtra, for repairing in the month of july 2017 but still they are unable to resolve the problem and unable to return my vehicle. Upon contacting to them, the reply got is the car is under repair. They are not sure about when it will be repaired. Where should i take up the matter so that it will be finished.