Hyundai Motor India — accidental car was not received (promise date[protected]

Dl 7cq 1790 i20 silver colour accident happened on[protected]
On same date we claimed and our claimed was also approved and the concerned person mr. Subhodh kumar (Advisor [protected]) who handle my car. He was promised me to give my car on[protected] but now he is not receiving our call and when he receive call he start giving us many excuses that ur car part are not available in company or many other excuses i also told him sir u will give me a confirm date of receiving, i will not call u before that date but he said sir what can i do parts are not available in company
Now tell me what i do please take this complaint seriously and solve my problem