Claiming penalty for delay in property handover or termination and refund

I have purchased a property in a Dubai project and as per my agreement, they are supposed to give me possession by the second quarter of 2019.

However, they have still not given possession and when I ask for the delay compensation of 4%, they are not responding to that.

As per Dubai Real Estate Law, can I cancel the contract?

I am no more interested in continuing with these guys. If I file a case in the court, will the court ask them to pay the delayed charges as well as the legal expenses?

Please advise