Maruti Suzuki Brand Centre

i m manoj from faridabad , we have maruti zen estelo 2010 model ,some days before go to TCS Autoworld for vehicle service and some problem in AC , after some days workshop GM your vehicle not ready you pay advance money then ready vehicle, TCS estimate approx 12000 rupees and this time we need 30000 advance i shocked, why need 30000 thousand your estimate 12000 . no any answer. other 1 person says your vehicle engine head change other vehicle head so you purchase new head ,

this time our vehicle not running cndication 100% bed our vehicle no HR51AJ 2665