Am applying sponsor change but my old sponsor hurt...

We would like to inform you that according to the Qatar Labor Law, the work termination states the below:
Article (49)
If the service contract is of an indefinite duration any of the two parties thereto may terminate it without giving the reasons for the termination. In this case the party intending to terminate the contract shall notify the other party in writing as follows:
1. In respect of the workers who receive their wages annually or monthly, the notification shall be given not less than one month prior to the date of the termination. If the period of service is five years or less. If the period of service is more than five years, the notification period shall be at least two months prior to the date of termination.
2. In all other cases the notification shall be given in accordance with the following periods :
A) If the period of service is less than one year the notification period shall be at least one week.
B) If the period of service is more than one year and less than five years
C) the notification period shall be at least two weeks.
D) If the service period is more than five years the notification period shall
E) be at least one month.
Article 21
The employer, the Competent Authorities, and the Ministry of Labor and Social Affairs may agree to transfer the Foreign National laborer to another employer before the time limit in the contract has been reached or after five years of working for the employer if the contract did not specify a time period.
The Foreign National laborer may, with authorization from the Competent Authorities and the Ministry of Labor and Social Affairs, transfer to another employer in the event of the Recruiter’s death or dissolution of the body corporate for any reason.
In all cases, the employer serving as the Recruiter shall not have his legal rights, or the contract between him and Foreign National, violated, in accordance with the referenced Labor Law.
The aforementioned article organized the cases of which the employee can transfer to another company as follow:
• With an approval from the employer (Whatever the contract type is)
• After completing five years on unfixed term contract
• The end of the fixed term contract
• The death of the employer
Also, the law, the employer can’t terminate you during the leave as this is arbitrary dismissal and the employer shall pay compensation to the worker, as below article states:
Article 85
An employer may terminate the services of a worker who fails to report back to work after exhausting all sick leaves provided for in Articles 82, 83 and 84 hereof. In this case the worker shall be entitled to severance pay as stipulated in this Law.
Also, it is not allowed to notify the worker about the contract termination if the notice period finished during these leaves.
We would like to inform you that according to the Qatari Labor Law, the Ministry of Labor and Social Affairs shall have the jurisdiction to submit the complaint. Therefore, the complaint must include all that you mentioned in your inquiry for purposes of summoning and investigating with the sponsor and forcing him to pay the rights as stipulated by the law, Where the law provided legal protection for wages, which must be paid to the worker according to the legal text:
Article 65
The Worker shall be entitled to the wages specified in the service contract and if the contract does not specify the wage the worker shall be entitled to the wage specified in the work regulations.
If the wage is not specified in accordance with the preceding paragraph the worker shall be entitled to a wage equivalent to the wage specified for work of a similar type in the establishment and otherwise in accordance with the custom applicable to the profession in the place of performance of the work and if there is no such custom the judge shall specify the wage in accordance with the requirements of justice.
Article (66):
The wages and other sums to which the worker is entitled shall be paid in the Qatari currency. The wages of the workers employed on an annual or monthly wages shall be paid at least once in every month. The wages of all other workers shall be paid once at least every two weeks. The wages shall be paid to the worker himself within the working day’ and during working hours in the usual place of work or any other place to be approved by the Department and may be transferred to the account of the worker with the bank to be agreed upon by the two parties or paid to the attorney appointed by the worker in writing.
The employer shall not be relieved from his obligation to pay the wage due to the worker unless he has actually transferred it to the bank or the worker or his attorney has signed in acknowledgement of the receipt thereof in the register or receipt prepared for this purpose provided that the said documents shall include the details of the wage.
So, you can file a complaint in the labor office to get your dues, the law grants you the right to terminate the work without notice as below
Article (51)
The worker may terminate the service contract before its expiry date if the contract is of a definite duration and without giving reasons for the termination if the contract is of an indefinite duration and retains his full right to obtain the end of service gratuity in the following cases:
1. If the employer commits a breach of his obligations under the service contract or the provisions of this law.
2. If the employer or his responsible manager commits a physical assault or immoral act upon the worker or any of his family member.
3. If the employer or his representative has misled the worker at the time of entering into the service contract as to the terms and conditions of the work.
4. If continuance with the work endangers the safety and health of the worker provided that the employer is aware of the danger and does not take the necessary steps to remove it.
The ministry may grants you the permit to change the employer without the requirement of NOC.