Reliance Trends — credit note issue

Address:

Mumbai City, Maharashtra

I had a credit note of around 1300rs in my reliance card. As i was out of town in kokan region for a project, so i couldn't utilize the amount. When i returned i went to same reliance trend on 12th august when i came to know credit note as been expired on 8th august just 4 days back so they suggested to write an email. I did email they them the whole story to which they replied "credit note once lost or expired cannot be re-validated or extended as per the company policy". I again email them "such small time frame is not enough and it's a huge amount for common people like us and we have full right to get back our money. This type of money laundering from company like reliance is not at all expected. Before giving credit note it should have been mentioned on card it's valid for 3 months only, why it's written valid for lifetime. It was a genuine reasons for not using the credit note." to which they registered my complaint with no:2226287 and said it would get resolved within 7 days. So after 10 days i again send them the reminder for which they said "complaint has been resolved as per company policy it cannot be re-validated or extended." again the same reply. I did visited 3 reliance trend in mumbai and asked if such an issue was resolved in their branch to which their has been some cases where revalidation of credit note was done. It's my money and i have full right to get my money back. Please help.