Sobha Developers — sobha royal pavilion booking cancellation amount not refund yet

I have paid advance amount to book flat in shoba royal pavallion in apr 2019 and while giving advance 7.5lakhs, they confirmed that i can cancel if i am not interested. Due to financial issues i have requested for cancellation and refund in jun2019. Till today i did lot of follow ups, email and telephone calls, they have not given refund and not giving any projection date for the refund amount. Kindly help me in this.