Default in fulfilling obligations under off-plan property purchase

I bought an off-plan property In Abu Dhabi and have paid some percentage as part of the flexible payment program for the down payment.

However, no sale and purchase agreement has been provided to be signed by both parties.

Construction did not commence and recently, the entire project has been moved to another developer.

I have been contacted by the new developer and was told the project construction start date is indefinite.

Based on this, can I get a refund as I only have the reservation agreement and no contract has been signed, plus the project has not started which will definitely not be completed in time (even with a six months delay allowance)?