Indian Railway Catering & Tourism Corporation [IRCTC] — ticket cancellation refund not being credited to my account

My pnr number is [protected]. I canceled the ticket partially on 30th june and the refund amount shown was rs. 5580.
I mailed them couple of times, only automated mail is coming every time with a new ticket id, but no actual person is replying from irctc.

I also called the customer care 15-20 times but they always give some excuse or forward my call to their senior where i will be on hold on call for around 20 minutes and call will get disconnected.

Till today i have not received the refund. Please help me getting my money back.