Hyundai Motor India — Car Delivery failure

BM HYUNDAI DEHRADUN branch has made false commentment time to time and fail to deliver my car which was booked for wedding function.
They have booked my car by saying that it will be deliver by Feb 1st week and then they started making excuse and started giving false commetment that it will deliver by 2-3rd feb then they informed that no car is available and if required go for same model Diesel varient but then again they promised for 12th Feb and again failed even when all the formality of loan was completed. THEY ARE MAKIN FOOL OF CISTOMER. THEY HAVE NO ETHICS TO TALK WITH CX. THEY ARE MAKING FALSE STATEMENT. Please esclate to higher authorites.