Indian Railway Catering & Tourism Corporation [IRCTC] — non refund for train cancellation and proper guidence by custmor care executives

Address:	New Delhi, Delhi
Website:	www.irctc.co.in

I booked talkal ticket using irctc website from dausa to allahabad for 4 persons.
On the date of journay train get cancled for our station then i call the customer care number and they told me you will get refund automatic in 6-7 woring days
When i dont get it i call again they told me to mail all details on [protected]@irctc.co.in
When i mail them i got a system genrtated reply with a id which is [irctc #6192720].3rd time i call to custmer care and then they told you have to file a tdr with in 72 hrs but you dont so you will not get refund. Now what can i do to get my refund when they dont tell me he proper information on time.