how do I get my passport renewal after being held...

We would like to inform you that in order to renew the passport, you must review the embassy which you are affiliated with the other documents required for renewal as follows
First, it is necessary to review the consulate or the embassy to which it is affiliated, and submit the following documents.
-Passport + copies of the first three pages
-Emirates National Identity Card + two-way copy
-The document which proving residency + a copy
-Two colored photographs of the person concerned with the size of the passport

Dear, in the event that a new letter is obtained with the expiration of the visa, it must be canceled also, and in the event that it is canceled, the sponsor can The new sponsor can obtain a work visa for you, and if there are any fines, they must be paid to settle the residence

Madam, you can go to the Ministry of Labor and submit a complaint and explain the matter in detail for the purposes of obligating to return the passport to you as it prevents it from being detained there 
Article (23)
1. Either party to the contract of employment may dissolve it by unilateral will if the other party breaches its obligations under Articles 15 and 16 of this Law.
2. The employer and the worker have the right to terminate the contract. If the contract is terminated by the employer, and because the worker does not return to the worker, the employer will be obliged to provide a ticket for the return of the worker to his country in addition to payment of compensation equal to the comprehensive wage for one month and any other entitlements to the worker in the employer's custody, Other damages may be adjudicated by the Court.
3. If the termination of the contract by the worker and due to him after the period of experience bear the expenses of returning home, in addition to payment of compensation to the employer equivalent to comprehensive pay for one month and any other entitlements to the employer in respect of the worker and any other compensation may be ruled by the court.
4. In all cases of termination of the employment relationship, the Ministry shall have the power to grant the worker a new work permit or not to grant it in accordance with the rules determined in this regard, and taking into account the provisions in force in the State.
** So you can go to the Ministry of Labor and file a complaint against the maid, explain the matter in detail, and request to cancel the visa