Hyundai Motor India — harassing customers

Address:

Hans Hyundai, moti nagar, New Delhi, Delhi, 110008

I have made a service request to hans hyundai, moti nagar, new delhi and the date and time of pickup for service was fixed was[protected]:00-8:30 am. The person who has to pick the vehicle had called me 3-4 time a day before the service just to locate the address. Then on next day the person for pickup had arrived at 10:30 am. I have clearly told them that i have to leave for my office at 9:30am.
Later around 5:00pm i have told them that they need to put my gst details on the bill and i have messaged the details at the same time. After generating the bill the person had called me for the mode for payment. I told him that i will imps for will give him the cheque, firstly he denied to take the both and also told me that the company doesn't take cheque, and after 30 minutes of argument he send me his details for imps. Before receiving the car i had transfer the bill amount which was 10157. Moreover, there was discount scheme from 16th july to 21st july named hyundai mansoon camp and the bill was generated on mrp there was no discount mentioned on the bill and when i have called the person next day he told me that he forgets to mention that and was waiting for his manager to come office. Then they were ready for the the refund only for periodic maintenance service of rs. 2255 and refund of rs. 338 was to be refunded.
There problems i faced was firstly, pickup timing. Secondly, no mention of discounts on the bill. Thirdly, the old bill will be canceled and new bill will be generated after 2-3 days.