Non-payment of salary and the proper legal action

Sir.

I am working in a restaurant as a food supervisor.

I was working in a restaurant in Dubai, where I got an AED 5000 salary. A managing director of a restaurant in Abu Dhabi asked me to join his restaurant.

That time he offered me a salary of AED 7000, so I resigned from my job in the Dubai restaurant.

After I joined the Abu Dhabi restaurant, he mentioned in my labour contract AED 4500 salary only.

That time he said above AED 5000 salary I have to pay more amount for the insurance, and the remaining balance amount he will give cash or cheque. So, I signed the contract.

After that, he did not pay my salary properly. I was working around 11 months, but he paid only 6 months. In these 6 months, he also paid my basic salary only (in my contract, the basic salary is AED 3500 and other allowances are AED 1000, in total salary is AED 4500).

Now, he is saying that he's not going to pay because I bring losses to his business.

So please help me with this situation, Sir.