Legal Advice Work Contract

Dear Sir,

We are seeking for legal advice. I am a western working in Saudi Arabia (expat).

Employer gave a formal letter (hard copy) with higher management signature(director) informing me that contract will last 2 more years with a specific month and date (September 2023 to August 31 2025). Employer stated in the letter that work is extended for additional two more years.
However, contract ended after a year and still owes us another more year according to the formal letter given.

Problem is the employer did not really let us sign and/or gave us the legit contract with benefits, salary etc included.

They let us sign and give notice July 23 that contract will end August 31, 2024.

It is very unprofessional to give a formal letter informing the worker that company will be extended for two more years then after a year they said it is not renewed. Even we asked for a contract to be signed last 2023, but they just gave this formal letter.

As a worker, what should be our rights regarding this matter?
Thank you for your enlightenment.