Chevrolet India — Not delivering the vehicle

Address:	Hyderabad, Andhra Pradesh, 500049
Website:	www.chevrolet.co.in

I have given my sail uva vehicle for repair on june 2nd 2016 at orange chevrolet service center, hafeezpet. The local dealer promised me to deliver the vehicle in 15 days i, e on june 17 2016. When i went to service center for the delivery of my vehicle, they said my vehicle has not yet been completed and promised me to deliver the vehicle on june 29. Unfortunately, i went on june 29 they asked me to come after one week that is on july 6. I contacted them on july 6 they said my vehicle will be delivered on 15th july. I checked my vehicle status in the service centre on 15th july, to my disappointment the vehicle repair has not yet been started. I approached the chevrolet customer car and raised a complaint and this time both customer care and service centre people promised my vehicle to be delivered on 29 july. Since then, i have not received any call either from customer care (Even though calling them very frequently) or even local dealer. Today i contacted the local dealer and again i got the same response that they are not going to deliver my vehicle on even 29 july.
Even chevrolet customer care people are not responding to the customer complaints. I don't understand to whom i need to approach for my vehicle to be delivered.
I really don't understand why chevrolet is still selling the vehicles, if they cant do the service to them. It is loosing its brand value and fame in india.