Tanishq — Fraud in the name of Gold Harvest scheme

I had invested in Gold Harvest scheme in September 2020. Due to some personal reason I opted for refund of invested amount after completing the period in August 2021. At the time of refund I had enquired for the bonus amount for which I was told that I can purchase a gold coin anytime but only after receiving refund in the account. When I visited the showroom in October I was told I can't get the bonus amount as the scheme was valid till September 2021. This is fraud. I've been cheated. Please help.