Lodha Group — Not refunding my amount

I have booked a 1BHK in Crown in Thane in October 2020.
I have paid a total payment of 3, 26, 445 till date for the same. However, my loan could not be processed as my CIbil is low. lodha tried with diff banks but after 3 months also the loan could not be approved. So, I want to cancel my booking and as it's RERA registered I request you to process my full refund as discussed with Mr. Uday at the Crown sales office on Sunday 21 Feb 2021.
He assured me that the full amount is refundable and the process will take somewhere about 3 months.
They aren't even answering calls nor they are replying on email.
How can you take my money when my loan could not be processed.
At time of booking I was told if loan wont happen we will refund full amount. Uday Bhan, the sales lead, assured me this.

Its been 2 months, I am chasing Lodha but no response.

Please help.
My hard earned savings are stuck with Mumbai.

54, 000 Debit Card, HDFC
80, 000 IMPS, HDFC BANK
59, 110 IMPS, HDFC BANK
1, 33, 335 IMPS, SBI-BANK

3, 26, 445 Paid till Date

If you need any additional details please let me know.

Why our government is so soft with such builders. There are 100 of cases of cheating.