I am not sure what type of contract you were engaged with the company? Limited or Unlimited? Freezone company or LLC ? and the terms mentioned in your Employment contract (Not offer letter).
* If you are working in a unlimited contract, as per UAE labor law , 1 month notice period is enough.(again pls refer to your employment contract). if you have served 15 days, the company can deduct the remaining 15 days salary(Basic). Normally, the companies will deduct from you End of Service benefits (Unavailed leave, Gratuity etc).
* If you were working in Limited contract, you have to serve the term mentioned in the Employment contract and again the company might ask you to pay the compensation of Non- completion of Contract.
3rd October 2012 From United Arab Emirates, Dubai