Worst car experience of my life, going to service centre after every 1000 - 3000kms for same problem

The car is good to use if you keep it just like a child & if you want to use, it'll collapse after every 1000-3000kms, gives a mileage of 13 - 15 in a mix of highway & city use. engine & other parts quality is very bad, from 30000 kms onwards am paying heavily for maintenence. Car is not running @ more than a speed of 90kmph / 2000 rpm. purchased the car and kept the car in service centre for 5 - 10 days a month
 every 10 days i book my car for problem, they correct it and after few days the same problem arises and i have to take the car back service station. and their service circle & bill goes on & on.
good comfort . one day 1000kms of running.Low mileage, bad services from harpreet ford, bad repairs, engine is weak, problems started @ 30k km