Sobha Developers — sobha developers refund of booking amount from sobha for forest edge project

I had booked a unit a1-1111 in sobha forest edge. We have paid the advance of rs 8 lakhs

Due to financial constraint, we were not able to go for the property, we spoke to the sales contact kavya, and she told us to send a cancellation email. We sent the cancellation email on oct 14th 2018. Till now we haven't heard back from sobha, they are not even picking up the calls.

At the time of booking, they (Sales person) said that booking amount will be refunded within a month.

This is a huge amount and we are in need of this money.