RNS MOTORS - Car problem since one year

My car is vitara breeza Zxi plus ,which I brought on May *th ****.I first service only I told that "my car has problem showing check light see it" andthey told "its usual in every car don't car"and finished first service.In jigani link road branch.After first service my car got major problem that it never gets OFF BUT shows ACC in Meter Board and can't lock my car through sensor's. Really I used my manual key for locking.. I gone through the showroom for *-* times to complain But the service department never respond to me. After Some day I directly complained to works manager Pavan sir. He took the car ,gone to yeswanthpura branch and Gave my car after * days and told "Some sensor Issue and power button problem I solved it"and I was very happy and went home with my car. And my Second service was done in Another RNS Branch near HEBBAGODI.After second service there was No problem for * months . Again same problem that it never gets OFF BUT shows ACC in Meter Board and can't lock my car through sensor's and major problem was the steering gets hard random times with Brake and ABS Symbols in Meter Board and gets power steering after ** minutes. With that I call'ed to Jigani link road branch But they didn't respond. So I called Niranjan Service Head Bangalore Through ROSHAN SHETTY sales manager from Jigani link road branch. As I heard that NIRANJAN Sir will come and Solve my car problem personally.So I Left my Car in showroom and Went to home.After *days they gave my Car at **:**Am But same problems in my car and Returned to showroom at *:**pm.and Informed Niranjan Sir.BUT no reaction the date Stills no reaction from RNS MOTORS