Toothsi Aligners — Refund is not being processed

I have taken Toothsi teeth alignment scan and they called me continuously till I opt their plan. And they said if I am not happy with the results my full amount will be refunded and they didn’t mention about any deductions. So I have paid 42000 and then they have come up with my treatment plan, which I was not satisfied with. So I requested them to cancel my plan and refund my amount, then they tried to convince me for the same treatment plan. When I was not ready to proceed further, they told 5000 will be deducted from amount. I agreed for that and asked to cancel my plan. It’s been 4 months, I am not getting any response from toothsi. After multiple calls to customer support, they will pick the call and tell us that someone will contact us. But not received a single call/update about my refund.