Claiming pending salaries from the employer after resignation

Hello,

I've worked for an employer in Dubai for one year. I resigned before the end of the contract so the contract won't be renewed. My employer held a worth of 4 months salary and didn't pay to me till date.

The employer wasn't my sponsor but we have a signed contract and an email conversation where he promised to pay but he didn't.

What can we do?

The owners are a Canadian and a Saudi and the company is in DMCC.