Maruti Suzuki India — poor and worst service

Address:

Indore, Madhya Pradesh, 452001

I purchased maruti alto 800 from ocean motors indore and regualrly take servicing and imsirance frm there only. Every time i suffer from today its worst..
Today i droped my car at 10.30am with paid service coupan with confirmation to get back at 2.00pm, they ask for n no. Of job but i did not required as they were not neccessary.
At 5.45pm they told me servicing not possible we cant drop car you come and take back even they r neither ready to wash the car against their own paid voucher nor ready to deliver back