Termination of limited labour contract by the employer

Salam!

I have a Limited Labor Contract with LLC company in Dubai till 01.05.17 as a Project Manager. The salary that is stated in my labor contract is much less than I agreed with CFO to work for. Never was paid in full as per our "Gentleman's Agreement".

After I raised this matter to CFO of the company they urgently want to terminate my contract. There was no Letters nor Warnings!

What am I entitled to in this case and what is the algorithm of my actions?

Thank you very much for your advice!