Obtaining refund from the developer for project delay

I booked an off-plan studio in R.E.P. DIP. The developer posts to me the contract to sign. I signed the contract and posted it back to their address.

The texture property In Dubai has been dealing and I transferred 10% to reserve the unit in June 2015. I have paid over 30% until the end of Dec 2016.

I stopped paying the rest of instalments because after viewing 0% construction report through DLD website and neither developer has provided me Oqood.

There is still no construction as per the DLD report for project number 1514. I am considering to get a refund.

The total price of the studio is AED 330000. 10% at the outset, 36 equal instalments during construction, 20% on handover and 18 equal instalments after the handover.

I have paid 10% and 18 equal instalments out of 36 during the construction as per contract. Total AED 109,973.94 paid: AED 109,973.00

What are the possibilities to get a refund from the developer? How much would it cost?