Legal action against a contracting company for forging a government permit

A contracting company in the UAE sent us an email with a DDA Permit to build a room in our house. Then subsequently they got approval from DDA (Dubai Development Authority).

We have the original email from the Authority that the documents were issued with a permit, dated 04.07.21. But the contract changed the DDA document date to 04.08.21.

We seek legal advice if this can be termed as a crime in the UAE for manipulating a document and if any lawyer can confirm to us if this is a genuine case that can be filed in Dubai Courts and which law applies to forging a document by email.

The reason why the contractor forged the document is that they took the payment from us and wanted to delay the project and kept on telling us that DDA has not given any approval.

Only after contacting DDA directly, we got the original document which shows a different date.