Claiming labour rights ten months after resignation

I had filed a complaint against my previous employer to whom I worked for 6 years and 7 months. They did not give me my End of Service Gratuity, Leaves and Salary which amount, in total, to 87,000 AED. They are now 10 months due from the time I resigned.

My previous employer's legal representative first said that I am not eligible for all my claims since I did not serve notice period which is not true.

I responded citing evidence and today I received a letter from them again saying that I already signed that I received all my dues. Yes, I signed the MOL cancellation, but I haven't received my money.

There is no evidence that our company transferred such amount to my account. I signed because I was told that they will not cancel my MOL and I would not be able to start with my new job.

I wish someone represents me as I feel like my previous employer's legal representative is only delaying what is due.