Can I demand interest on the delayed payment?

I invested 19 lakhs in a government company society layout in Bangalore in 2015, based on a colleague's recommendation. The layout was supposed to be approved and ready, but it has been delayed for years. The Society is now saying the layout is not approved and they will refund the money. almost 10 years !! I've only received 5 lakhs so far despite multiple followups.Now Society asking to chase developer directly whereas I never dealt with him till date. My questions: Can I demand interest on the delayed payment? Do I have a strong case if I take this to court? Additional information: I have a receipt for the payment. The AGS office has a record of my investment. I don't have a signed contract or any other documentation. Please let me know if you need any further clarification.