Indian Railways — no refund on class downgrade

I had a booking with pnr [protected] for which my 1st ac class was lowered to 2nd ac and i had to travel in 2nd ac. I asked the tte for travel certificate class downgrade and he told me that certificate is not required and your balance money will be credited automatically as it was an e-ticket. I tried to contact irctc but they redirected me to [protected]@claims. Indianrail.gov.in. However, it's been more than a month and i still have not got any reply or refund.