Capital First — NOC not received from Past 4 Years

I was having a two wheeler loan from capital first on Year 2016 for 18 months. I did pay the loan on time and closed the loan on 2017. After that I followed up with Capital First for NOC latter. Later on I change my place and same i had update at call center and they promise me do deliver the NOC letter at my nee address. But till now I didn't received the NOC letter and My bike is under hypothecation. Because of the negligence of Capital first i am not able to sell my bike. Please help me on this case.
Below is the details:

Agreement No : 5288907
Agreement Date:08-Feb-2016
Tenure(in month): 18 Months
Last EMI Date : 5-Sep-2017