Capital First — delay in getting noc

Address: Chennai, Tamil Nadu

Hi Im Venkatesh, My loan no is 9681913, I had taken a pre-owned car loan on February 2017 and closed the same on July 2019, when I contacted the customer care after closing the loan requesting NOC they told me that I would be getting it within next 15 days. Today is[protected] almost close to 50 days after the loan got closed, Im still following up for NOC but have not got it.
Due to a financial exigency, I wanted to sell off the car but without NOC Im not able to sell it.
Whenever I call the customer care to follow up on the NOC, the executive will be like "ok sir I would take your request now and NOC will be delivered to the registered address within next 15 days" as if that was the first time Im making the request for the same. This cycle has been continuing and I have no idea when I will get the NOC. Kindly help.