The right to terminate the SPA and recover the paid amount

I have purchased a studio unit from a developer in Oct 2015. To date, I have made 8 payments (total: AED 305.000) plus Oqood (30.000).

The developer destroyed my SPA without my knowledge (the excuse was that I didn't collect it but I have requested it on multiple occasions).

Currently, the project has been delayed for nearly 2 years. Initially, the handover was Q2, 2018 and now it's expected Q4, 2020 (not sure if that's possible as currently, it's only at 70.56 complete).

Can I cancel my contract and get my money back since I have no contract in place?

They are keen to set up a new contract and get me to sign one.