Indian Railways — refund against cancelled ticket

Address:

303,Akshar plaza apartment,bhagyoday society,chala vapi-396191, Valsad, Gujarat

To,
Sr. Dcm, western railways.
I have booked 04 tickets details mentioned below with pnr number.
Pnr no-[protected]
Pnr no-[protected]
Pnr no-[protected]
Pnr no-[protected]
I have cancelled all above mentioned tickets on date16/08/2019 but not received any refund till today. I have given letter to prs dept at vapi railway station on 09/09/2019 but no satisfactory reponse was given to me. I had called many time on customer care no but no one received calls.
Please revert back and resolve my issue at earliest.