I have change employment in KSA and signed my...

We would like to inform you that if the employer refuses to pay you the final settlement, in this case you can file a complaint against the employer before the competent labor department and ask him to pay it for your final settlement

Article 84:
If the working relationship ends, the employer must pay the worker a reward for the period of his service, calculated on the basis of half a month's wages for each of the first five years, and a month's wage for each of the following years, and the last wage as the basis for calculating the remuneration, and the worker is entitled to a reward for Portions of the year in proportion to what he spent on the job.

Article 85:
If the termination of the working relationship is due to the worker's resignation, he deserves in this case one-third of the reward after service of no less than two consecutive years and not more than five years, and two-thirds of it is due if his service period exceeds five consecutive years and has not reached ten years, and he is entitled to a full remuneration if his service period Ten years or more.

Article 86:
As an exception to the provision of Article (8) of this system, it is permissible to agree that the wage on which the end of service gratuity is settled all or part of the commission amounts and the percentages on the sales price and the similar elements of the wage that is paid to the worker and which are by their nature subject to increase and decrease.