Infrastructure Development Finance Company [IDFC] — In different attitudes of IDFC to my redemption request of 4 no. Bonds Tranche 2 folio IDB0227129

The IDFC has not credited the redemption amount in my account so far despite complaints lodged on 17th and 22nd April 2021and despite my speed post received by the company on 6th April 2021.I sent them another speed post on 21st April 2021.The postal track of this latest speed post as on 26th April 2021 reads*Item returned. Addressee left without instructions *
I request to process crediting of redemption proceeds of my hard earned investment of Rs. 20000 made in February 2011 to my account number already communicated to the company. The bonds have matured on[protected].My folio no. is IDB0227129. The company does not seem to realise my distress. I need the money badly in connection with the forthcoming Eid festival. Was it a sin to invest in the company ten years ago and the company showing callousness to the redemption request. Noor ud din Baqual House no. 17 Lane 3 Ibrahim Colony Hyderpora Srinagar Kashmir 190014.