Employment Contract/Recruitment Cost/Vacation pay

I am under a 2 year contract in Doha. i am currently at my 12th months. i am decided to resign after a year. i believe that my return ticket is my own expenses and the 21days vacation will give it to me but they told me i will pay the hiring cost/or recruitment cost. it is applicable?

see here the computation;

Air ticket X,XXX
Work Visa 300
Medical Test 100
Contract 60

Total Cost / 730days = multiplied by remaining days... this would be the cost that i will pay less the 21 days vacation as computed like this;

Basic salary X 12/365 X 21days = 21days paid leave

is this correct???because in Saudi the computation is like these;

Vacation pay: Basic salary divided by thirty days multiply by 1.75 (21 days / 12 months = 1.75) multiply by 24 months. (SR0000/30 X 1.75 X 24 = SR 0000.00)

The resident Permit and Health card will not pay because it is only for one year.

Please give me an advise...and how much will i pay and the correct computation or formula for vacation or recruitment cost.

thanks