My company cancelled my vize when i am in...

We would like to inform you that if according to the UAE Labor Law , this considered violation and an arbitrary dismissal as the below articles state:
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.
Article (90)
Without prejudice to the instances in which an employer is entitled to dismiss a worker without notice or without the gratuity provided for in this Law, an employer shall not dismiss a worker or serve a notice of dismissal on him while the worker is on a leave provided for under this section.
Therefore, you can file a complaint in the labor court and claim for compensation and the end of services:
Article (115)
Where an employment contract is for a definite term and the employer revokes it for reasons other than those specified in Article (120) he shall be required to compensate the worker for any damage the latter sustains, provided that the amount of compensation shall in no case exceed the aggregate wage due for a period of three months or the remaining period of the contract, whichever is shorter, unless otherwise stipulated in the contract.
Article 123:
Where a worker is arbitrarily dismissed, the competent court may order the employer to pay him a compensation, to be assessed by the court with due regard to the nature of the work, the extent of damage sustained by the worker and his period of service, and after investigating the work circumstances, provided that such compensation shall in no case exceed the worker's wage for three months, calculated on the basis of his last wage.