Maruti Suzuki India — regarding servicing and repairing work

Address:

Kolkata, West Bengal

Send my car (Maruti wagon r) for servicing, change of switch of power window of both right & left front window, wheel allignment, rectification of high engine sound, chcking of a. C system etc. On 29.01.2018 and they have told me to deliver the car to me on next day, but failed to delivered car on stipulated day.
They delivered the car to me on 31.01.2018 and i am not at all satisfied with their serviing work this time. I purchased my car from dewars garage in 2009 and since then i used to go for servicing to this service centre. But this centre gradually become worst day by day.