Terminating an SPA due to a delay in a project for 24 months

Seeking legal advice to terminate SPA due to a delay in the project for 24 months.

I have purchased 2 apartments from a developer.

Details of the project as per the signed SPAs:

- 30% paid on time, 70% to be paid on handover.

- Expected handover: 1-Apr-2019, Longstop: 1-Apr-2020.

The Developer sent an email on 17-Mar-2020 saying that the new completion date will be September 2020 & October 2020 respectively for both apartments due to Covid-19.

I met the developer on 2-Nov-2020 informing them that both apartments have not been delivered in September 2020 / October 2020 and asked for refunds.

They flatly refused to refund saying that it is not possible and Dubai Court will favor their case due to COVID-19 if I decided to approach Dubai Court.

On March 31, 2021, they sent the handover notice for 1 apartment.

Question:

Do I have a winning case if I filed to court to return the paid amount?

I can provide the signed SPA if you need to review the terms and conditions of the signed SPA.