Extremely poor after sales service

I own renault fluence. Just purchased few months back. People discuss various things for car like comfort, looks etc. Even I too compared everything and got fluence. Everything was fine till first Service. I gave it for  first servicing and got very pathetic result. Then again gave it to readdress the issue. They have very very bad management. No one answers your call and if they say to call back in a hour, they will surely not get back for next 3 to 4 days. This is really unbelievable to get such a bad service from Renault. I do have ford cars, great service and a responsible company. Whereas renault, poor staff, poor management. In the name of servicing they just bluff customers. If u give your new car for general servicing they will return u in minimum of 10 days that too after several painful follow ups.